diff --git a/dist/entry.js b/dist/entry.js
index 9110b1da2c..be9d8b0624 100644
--- a/dist/entry.js
+++ b/dist/entry.js
@@ -10833,9 +10833,10 @@ Entry.Scene.prototype.generateElement = function(b) {
   }
   Entry.Utils.disableContextmenu(c);
   $(c).on("contextmenu", function() {
-    Entry.ContextMenu.show([{text:Lang.Workspace.duplicate_scene, callback:function() {
+    var a = [{text:Lang.Workspace.duplicate_scene, enable:Entry.engine.isState("stop"), callback:function() {
       Entry.scene.cloneScene(b);
-    }}], "workspace-contextmenu");
+    }}];
+    Entry.ContextMenu.show(a, "workspace-contextmenu");
   });
   return b.view = c;
 };
@@ -13760,6 +13761,7 @@ Entry.VariableContainer.prototype.addVariable = function(b) {
     var a = this.variableAddPanel;
     b = a.view.name.value.trim();
     b && 0 !== b.length || (b = Lang.Workspace.variable);
+    b.length > this._maxNameLength && (b = this._truncName(b, "variable"));
     b = this.checkAllVariableName(b, "variables_") ? Entry.getOrderedName(b, this.variables_, "name_") : b;
     var c = a.info;
     b = {name:b, isCloud:c.isCloud, object:c.object, variableType:"variable"};
@@ -13868,6 +13870,7 @@ Entry.VariableContainer.prototype.addMessage = function(b) {
   this.messages_.unshift(b);
   Entry.playground.reloadPlayground();
   this.updateList();
+  b.listElement.nameField.focus();
   return new Entry.State(this, this.removeMessage, b);
 };
 Entry.VariableContainer.prototype.removeMessage = function(b) {
@@ -13938,6 +13941,7 @@ Entry.VariableContainer.prototype.addList = function(b) {
     b = a.view.name.value.trim();
     b && 0 !== b.length || (b = Lang.Workspace.list);
     var c = a.info;
+    b.length > this._maxNameLength && (b = this._truncName(b, "list"));
     b = this.checkAllVariableName(b, "lists_") ? Entry.getOrderedName(b, this.lists_, "name_") : b;
     b = {name:b, isCloud:c.isCloud, object:c.object, variableType:"list"};
     a.view.addClass("entryRemove");
@@ -14612,6 +14616,12 @@ Entry.VariableContainer.prototype.removeRef = function(b, a) {
 Entry.VariableContainer.prototype._getBlockMenu = function() {
   return Entry.playground.mainWorkspace.getBlockMenu();
 };
+Entry.VariableContainer.prototype._truncName = function(b, a) {
+  b = b.substring(0, this._maxNameLength);
+  Entry.toast.warning(Lang.Workspace[a + "_name_auto_edited_title"], Lang.Workspace[a + "_name_auto_edited_content"]);
+  return b;
+};
+Entry.VariableContainer.prototype._maxNameLength = 10;
 Entry.block.run = {skeleton:"basic", color:"#3BBD70", contents:["this is", "basic block"], func:function() {
 }};
 Entry.block.mutant = {skeleton:"basic", event:"start", color:"#3BBD70", template:"test mutant block", params:[], func:function() {
@@ -16925,16 +16935,14 @@ Entry.Utils.inherit(Entry.Field, Entry.FieldDropdown);
   b._position = function() {
     var a = this.getAbsolutePosFromDocument();
     a.y += this.box.height / 2;
-    var b = $(document).height(), d = this.optionGroup.height(), e = this.optionGroup.width();
-    if (b < a.y + d) {
-      a.x += this.box.width + 1;
-      var b = this.getAbsolutePosFromBoard(), f = this._blockView.getBoard().svgDom.height(), f = f - (f - b.y);
-      f - 20 < d && this.optionGroup.height(f - f % 20);
-      a.y -= this.optionGroup.height();
+    var b = $(document).height(), d = this.optionGroup.height(), e = this.optionGroup.width() + 20;
+    if (b < a.y + d + 30) {
+      var b = this._blockView.getBoard().svgDom.height(), f = this.getAbsolutePosFromBoard();
+      this._blockView.y < b / 2 ? (a.x += this.box.width / 2 - e / 2, b -= f.y + 30, this.optionGroup.height(b)) : (a.x += this.box.width + 1, b -= b - f.y, b - 30 < d && this.optionGroup.height(b - b % 30), a.y -= this.optionGroup.height());
     } else {
       a.x += this.box.width / 2 - e / 2;
     }
-    this.optionGroup.css({left:a.x, top:a.y, width:e + 20});
+    this.optionGroup.css({left:a.x, top:a.y, width:e});
   };
   b.applyValue = function(a) {
     this.value != a && this.setValue(a);
diff --git a/dist/entry.min.js b/dist/entry.min.js
index d6431e0056..abfa5a64c5 100644
--- a/dist/entry.min.js
+++ b/dist/entry.min.js
@@ -1045,8 +1045,8 @@ h.trigger("mousedown"))});var d=Entry.createElement("ul");d.addClass("entryScene
 d.bindOnClick(function(a){Entry.engine.isState("run")||Entry.scene.addScene()}),this.view_.appendChild(d),this.addButton_=d)}};
 Entry.Scene.prototype.generateElement=function(b){var a=this,c=Entry.createElement("li",b.id);c.addClass("entrySceneElementWorkspace");c.addClass("entrySceneButtonWorkspace");c.addClass("minValue");$(c).on("mousedown",function(a){Entry.engine.isState("run")?a.preventDefault():Entry.scene.selectScene(b)});var d=Entry.createElement("input");d.addClass("entrySceneFieldWorkspace");d.value=b.name;Entry.sceneEditable||(d.disabled="disabled");var e=Entry.createElement("span");e.addClass("entrySceneLeftWorkspace");
 c.appendChild(e);var f=Entry.createElement("span");f.addClass("entrySceneInputCover");f.style.width=Entry.computeInputWidth(b.name);c.appendChild(f);b.inputWrapper=f;d.onkeyup=function(c){c=c.keyCode;Entry.isArrowOrBackspace(c)||(b.name=this.value,f.style.width=Entry.computeInputWidth(b.name),a.resize(),13==c&&this.blur(),9<this.value.length&&(this.value=this.value.substring(0,10),this.blur()))};d.onblur=function(a){d.value=this.value;b.name=this.value;f.style.width=Entry.computeInputWidth(b.name)};
-f.appendChild(d);e=Entry.createElement("span");e.addClass("entrySceneRemoveButtonCoverWorkspace");c.appendChild(e);if(Entry.sceneEditable){var g=Entry.createElement("button");g.addClass("entrySceneRemoveButtonWorkspace");g.innerHTML="x";g.scene=b;g.bindOnClick(function(a){a.stopPropagation();Entry.engine.isState("run")||confirm(Lang.Workspace.will_you_delete_scene)&&Entry.scene.removeScene(this.scene)});e.appendChild(g)}Entry.Utils.disableContextmenu(c);$(c).on("contextmenu",function(){Entry.ContextMenu.show([{text:Lang.Workspace.duplicate_scene,
-callback:function(){Entry.scene.cloneScene(b)}}],"workspace-contextmenu")});return b.view=c};
+f.appendChild(d);e=Entry.createElement("span");e.addClass("entrySceneRemoveButtonCoverWorkspace");c.appendChild(e);if(Entry.sceneEditable){var g=Entry.createElement("button");g.addClass("entrySceneRemoveButtonWorkspace");g.innerHTML="x";g.scene=b;g.bindOnClick(function(a){a.stopPropagation();Entry.engine.isState("run")||confirm(Lang.Workspace.will_you_delete_scene)&&Entry.scene.removeScene(this.scene)});e.appendChild(g)}Entry.Utils.disableContextmenu(c);$(c).on("contextmenu",function(){var a=[{text:Lang.Workspace.duplicate_scene,
+enable:Entry.engine.isState("stop"),callback:function(){Entry.scene.cloneScene(b)}}];Entry.ContextMenu.show(a,"workspace-contextmenu")});return b.view=c};
 Entry.Scene.prototype.updateView=function(){if(!Entry.type||"workspace"==Entry.type){for(var b=this.listView_;b.hasChildNodes();)b.lastChild.removeClass("selectedScene"),b.removeChild(b.lastChild);for(var a in this.getScenes()){var c=this.scenes_[a];b.appendChild(c.view);this.selectedScene.id==c.id&&c.view.addClass("selectedScene")}this.addButton_&&(this.getScenes().length<this.maxCount?this.addButton_.removeClass("entryRemove"):this.addButton_.addClass("entryRemove"))}this.resize()};
 Entry.Scene.prototype.addScenes=function(b){if((this.scenes_=b)&&0!==b.length)for(var a=0,c=b.length;a<c;a++)this.generateElement(b[a]);else this.scenes_=[],this.scenes_.push(this.createScene());this.selectScene(this.getScenes()[0]);this.updateView()};
 Entry.Scene.prototype.addScene=function(b,a){void 0===b&&(b=this.createScene());b.view||this.generateElement(b);a||"number"==typeof a?this.getScenes().splice(a,0,b):this.getScenes().push(b);Entry.stage.objectContainers.push(Entry.stage.createObjectContainer(b));Entry.playground.flushPlayground();this.selectScene(b);this.updateView();return b};
@@ -1266,8 +1266,8 @@ Entry.VariableContainer.prototype.getListById=function(b){var a=this.lists_,c=[]
 Entry.VariableContainer.prototype.createFunctionView=function(b){var a=this;if(this.view_){var c=Entry.createElement("li");c.addClass("entryVariableListElementWorkspace");c.addClass("entryFunctionElementWorkspace");c.bindOnClick(function(c){c.stopPropagation();a.select(b)});var d=Entry.createElement("button");d.addClass("entryVariableListElementDeleteWorkspace");d.bindOnClick(function(c){c.stopPropagation();a.removeFunction(b);a.selected=null});var e=Entry.createElement("button");e.addClass("entryVariableListElementEditWorkspace");
 var f=this._getBlockMenu();e.bindOnClick(function(a){a.stopPropagation();Entry.Func.edit(b);Entry.playground&&(Entry.playground.changeViewMode("code"),"func"!=f.lastSelector&&f.selectMenu("func"))});var g=Entry.createElement("div");g.addClass("entryVariableFunctionElementNameWorkspace");g.innerHTML=b.description;c.nameField=g;c.appendChild(g);c.appendChild(e);c.appendChild(d);b.listElement=c}};
 Entry.VariableContainer.prototype.checkAllVariableName=function(b,a){a=this[a];for(var c=0;c<a.length;c++)if(a[c].name_==b)return!0;return!1};
-Entry.VariableContainer.prototype.addVariable=function(b){if(!b){var a=this.variableAddPanel;b=a.view.name.value.trim();b&&0!==b.length||(b=Lang.Workspace.variable);b=this.checkAllVariableName(b,"variables_")?Entry.getOrderedName(b,this.variables_,"name_"):b;var c=a.info;b={name:b,isCloud:c.isCloud,object:c.object,variableType:"variable"};a.view.addClass("entryRemove");this.resetVariableAddPanel("variable")}b=new Entry.Variable(b);Entry.stateManager&&Entry.stateManager.addCommand("add variable",this,
-this.removeVariable,b);b.generateView(this.variables_.length);this.createVariableView(b);this.variables_.unshift(b);Entry.playground.reloadPlayground();this.updateList();return new Entry.State(this,this.removeVariable,b)};
+Entry.VariableContainer.prototype.addVariable=function(b){if(!b){var a=this.variableAddPanel;b=a.view.name.value.trim();b&&0!==b.length||(b=Lang.Workspace.variable);b.length>this._maxNameLength&&(b=this._truncName(b,"variable"));b=this.checkAllVariableName(b,"variables_")?Entry.getOrderedName(b,this.variables_,"name_"):b;var c=a.info;b={name:b,isCloud:c.isCloud,object:c.object,variableType:"variable"};a.view.addClass("entryRemove");this.resetVariableAddPanel("variable")}b=new Entry.Variable(b);Entry.stateManager&&
+Entry.stateManager.addCommand("add variable",this,this.removeVariable,b);b.generateView(this.variables_.length);this.createVariableView(b);this.variables_.unshift(b);Entry.playground.reloadPlayground();this.updateList();return new Entry.State(this,this.removeVariable,b)};
 Entry.VariableContainer.prototype.removeVariable=function(b){var a=this.variables_.indexOf(b),c=b.toJSON();this.selected==b&&this.select(null);b.remove();this.variables_.splice(a,1);Entry.stateManager&&Entry.stateManager.addCommand("remove variable",this,this.addVariable,c);Entry.playground.reloadPlayground();this.updateList();return new Entry.State(this,this.addVariable,c)};
 Entry.VariableContainer.prototype.changeVariableName=function(b,a){b.name_!=a&&(Entry.isExist(a,"name_",this.variables_)?(b.listElement.nameField.value=b.name_,Entry.toast.alert(Lang.Workspace.variable_rename_failed,Lang.Workspace.variable_dup)):10<a.length?(b.listElement.nameField.value=b.name_,Entry.toast.alert(Lang.Workspace.variable_rename_failed,Lang.Workspace.variable_too_long)):(b.name_=a,b.updateView(),Entry.playground.reloadPlayground(),Entry.toast.success(Lang.Workspace.variable_rename,
 Lang.Workspace.variable_rename_ok)))};
@@ -1277,14 +1277,14 @@ Entry.VariableContainer.prototype.createVariableView=function(b){var a=this,c=En
 e.bindOnClick(function(c){c.stopPropagation();a.removeVariable(b);a.selectedVariable=null;a.variableSettingView.addClass("entryRemove")});var f=Entry.createElement("button");f.addClass("entryVariableListElementEditWorkspace");f.bindOnClick(function(c){c.stopPropagation();h.removeAttribute("disabled");g.removeClass("entryRemove");this.addClass("entryRemove");a.updateSelectedVariable(b);h.focus()});c.editButton=f;var g=Entry.createElement("button");g.addClass("entryVariableListElementEditWorkspace");
 g.addClass("entryRemove");g.bindOnClick(function(b){b.stopPropagation();h.blur();h.setAttribute("disabled","disabled");f.removeClass("entryRemove");this.addClass("entryRemove");a.updateSelectedVariable(null,"variable")});c.editSaveButton=g;var h=Entry.createElement("input");h.addClass("entryVariableListElementNameWorkspace");h.setAttribute("disabled","disabled");h.value=b.name_;h.bindOnClick(function(a){a.stopPropagation()});h.onblur=function(c){(c=this.value.trim())&&0!==c.length?a.changeVariableName(b,
 this.value):(Entry.toast.alert(Lang.Msgs.warn,Lang.Workspace.variable_can_not_space),this.value=b.getName())};h.onkeydown=function(a){13==a.keyCode&&this.blur()};c.nameField=h;d.appendChild(h);d.appendChild(f);d.appendChild(g);d.appendChild(e);b.listElement=c};
-Entry.VariableContainer.prototype.addMessage=function(b){b.id||(b.id=Entry.generateHash());Entry.stateManager&&Entry.stateManager.addCommand("add message",this,this.removeMessage,b);this.createMessageView(b);this.messages_.unshift(b);Entry.playground.reloadPlayground();this.updateList();return new Entry.State(this,this.removeMessage,b)};
+Entry.VariableContainer.prototype.addMessage=function(b){b.id||(b.id=Entry.generateHash());Entry.stateManager&&Entry.stateManager.addCommand("add message",this,this.removeMessage,b);this.createMessageView(b);this.messages_.unshift(b);Entry.playground.reloadPlayground();this.updateList();b.listElement.nameField.focus();return new Entry.State(this,this.removeMessage,b)};
 Entry.VariableContainer.prototype.removeMessage=function(b){this.selected==b&&this.select(null);Entry.stateManager&&Entry.stateManager.addCommand("remove message",this,this.addMessage,b);var a=this.messages_.indexOf(b);this.messages_.splice(a,1);this.updateList();Entry.playground.reloadPlayground();return new Entry.State(this,this.addMessage,b)};
 Entry.VariableContainer.prototype.changeMessageName=function(b,a){b.name!=a&&(Entry.isExist(a,"name",this.messages_)?(b.listElement.nameField.value=b.name,Entry.toast.alert(Lang.Workspace.message_rename_failed,Lang.Workspace.message_dup)):10<a.length?(b.listElement.nameField.value=b.name,Entry.toast.alert(Lang.Workspace.message_rename_failed,Lang.Workspace.message_too_long)):(b.name=a,Entry.playground.reloadPlayground(),Entry.toast.success(Lang.Workspace.message_rename,Lang.Workspace.message_rename_ok)))};
 Entry.VariableContainer.prototype.createMessageView=function(b){var a=this,c=Entry.createElement("li");c.addClass("entryVariableListElementWorkspace");c.addClass("entryMessageElementWorkspace");c.bindOnClick(function(c){a.select(b)});var d=Entry.createElement("button");d.addClass("entryVariableListElementDeleteWorkspace");d.bindOnClick(function(c){c.stopPropagation();a.removeMessage(b)});var e=Entry.createElement("button");e.addClass("entryVariableListElementEditWorkspace");e.bindOnClick(function(a){a.stopPropagation();
 g.removeAttribute("disabled");g.focus();f.removeClass("entryRemove");this.addClass("entryRemove")});var f=Entry.createElement("button");f.addClass("entryVariableListElementEditWorkspace");f.addClass("entryRemove");f.bindOnClick(function(a){a.stopPropagation();g.blur();e.removeClass("entryRemove");this.addClass("entryRemove")});var g=Entry.createElement("input");g.addClass("entryVariableListElementNameWorkspace");g.value=b.name;g.bindOnClick(function(a){a.stopPropagation()});g.onblur=function(c){(c=
 this.value.trim())&&0!==c.length?(a.changeMessageName(b,this.value),e.removeClass("entryRemove"),f.addClass("entryRemove"),g.setAttribute("disabled","disabled")):(Entry.toast.alert(Lang.Msgs.warn,Lang.Msgs.sign_can_not_space),this.value=b.name)};g.onkeydown=function(a){13==a.keyCode&&this.blur()};c.nameField=g;c.appendChild(g);c.appendChild(e);c.appendChild(f);c.appendChild(d);b.listElement=c};
-Entry.VariableContainer.prototype.addList=function(b){if(!b){var a=this.listAddPanel;b=a.view.name.value.trim();b&&0!==b.length||(b=Lang.Workspace.list);var c=a.info;b=this.checkAllVariableName(b,"lists_")?Entry.getOrderedName(b,this.lists_,"name_"):b;b={name:b,isCloud:c.isCloud,object:c.object,variableType:"list"};a.view.addClass("entryRemove");this.resetVariableAddPanel("list")}b=new Entry.Variable(b);Entry.stateManager&&Entry.stateManager.addCommand("add list",this,this.removeList,b);b.generateView(this.lists_.length);
-this.createListView(b);this.lists_.unshift(b);Entry.playground.reloadPlayground();this.updateList();return new Entry.State(this,this.removelist,b)};
+Entry.VariableContainer.prototype.addList=function(b){if(!b){var a=this.listAddPanel;b=a.view.name.value.trim();b&&0!==b.length||(b=Lang.Workspace.list);var c=a.info;b.length>this._maxNameLength&&(b=this._truncName(b,"list"));b=this.checkAllVariableName(b,"lists_")?Entry.getOrderedName(b,this.lists_,"name_"):b;b={name:b,isCloud:c.isCloud,object:c.object,variableType:"list"};a.view.addClass("entryRemove");this.resetVariableAddPanel("list")}b=new Entry.Variable(b);Entry.stateManager&&Entry.stateManager.addCommand("add list",
+this,this.removeList,b);b.generateView(this.lists_.length);this.createListView(b);this.lists_.unshift(b);Entry.playground.reloadPlayground();this.updateList();return new Entry.State(this,this.removelist,b)};
 Entry.VariableContainer.prototype.createListView=function(b){var a=this,c=Entry.createElement("li"),d=Entry.createElement("div");d.addClass("entryVariableListElementWrapperWorkspace");c.appendChild(d);c.addClass("entryVariableListElementWorkspace");b.object_?c.addClass("entryListLocalElementWorkspace"):b.isCloud_?c.addClass("entryListCloudElementWorkspace"):c.addClass("entryListGlobalElementWorkspace");c.bindOnClick(function(c){a.select(b)});var e=Entry.createElement("button");e.addClass("entryVariableListElementDeleteWorkspace");
 e.bindOnClick(function(c){c.stopPropagation();a.removeList(b);a.selectedList=null;a.listSettingView.addClass("entryRemove")});var f=Entry.createElement("button");f.addClass("entryVariableListElementEditWorkspace");f.bindOnClick(function(c){c.stopPropagation();h.removeAttribute("disabled");g.removeClass("entryRemove");this.addClass("entryRemove");a.updateSelectedVariable(b);h.focus()});c.editButton=f;var g=Entry.createElement("button");g.addClass("entryVariableListElementEditWorkspace");g.addClass("entryRemove");
 g.bindOnClick(function(c){c.stopPropagation();h.blur();h.setAttribute("disabled","disabled");f.removeClass("entryRemove");this.addClass("entryRemove");a.select(b);a.updateSelectedVariable(null,"list")});c.editSaveButton=g;var h=Entry.createElement("input");h.setAttribute("disabled","disabled");h.addClass("entryVariableListElementNameWorkspace");h.value=b.name_;h.bindOnClick(function(a){a.stopPropagation()});h.onblur=function(c){(c=this.value.trim())&&0!==c.length?a.changeListName(b,this.value):(Entry.toast.alert(Lang.Msgs.warn,
@@ -1334,7 +1334,7 @@ Entry.VariableContainer.prototype.updateCloudVariables=function(){var b=Entry.pr
 Entry.VariableContainer.prototype.addRef=function(b,a){if(this.view_&&Entry.playground.mainWorkspace.getMode()===Entry.Workspace.MODE_BOARD){var c={object:a.getCode().object,block:a};a.funcBlock&&(c.funcBlock=a.funcBlock,delete a.funcBlock);this[b].push(c);if("_functionRefs"==b)for(var d=a.type.substr(5),e=Entry.variableContainer.functions_[d].content.getBlockList(),f=0;f<e.length;f++){a=e[f];var g=a.events;-1<a.type.indexOf("func_")&&a.type.substr(5)==d||(g&&g.viewAdd&&g.viewAdd.forEach(function(b){a.getCode().object=
 c.object;b&&(a.funcBlock=c.block,b(a))}),g&&g.dataAdd&&g.dataAdd.forEach(function(b){a.getCode().object=c.object;b&&(a.funcBlock=c.block,b(a))}))}return c}};
 Entry.VariableContainer.prototype.removeRef=function(b,a){if(Entry.playground.mainWorkspace.getMode()===Entry.Workspace.MODE_BOARD){for(var c=this[b],d=0;d<c.length;d++)if(c[d].block==a){c.splice(d,1);break}if("_functionRefs"==b&&(c=a.type.substr(5),d=Entry.variableContainer.functions_[c]))for(var e=d.content.getBlockList(),d=0;d<e.length;d++){a=e[d];var f=a.events;-1<a.type.indexOf("func_")&&a.type.substr(5)==c||(f&&f.viewDestroy&&f.viewDestroy.forEach(function(b){b&&b(a)}),f&&f.dataDestroy&&f.dataDestroy.forEach(function(b){b&&
-b(a)}))}}};Entry.VariableContainer.prototype._getBlockMenu=function(){return Entry.playground.mainWorkspace.getBlockMenu()};Entry.block.run={skeleton:"basic",color:"#3BBD70",contents:["this is","basic block"],func:function(){}};Entry.block.mutant={skeleton:"basic",event:"start",color:"#3BBD70",template:"test mutant block",params:[],func:function(){},changeEvent:new Entry.Event};
+b(a)}))}}};Entry.VariableContainer.prototype._getBlockMenu=function(){return Entry.playground.mainWorkspace.getBlockMenu()};Entry.VariableContainer.prototype._truncName=function(b,a){b=b.substring(0,this._maxNameLength);Entry.toast.warning(Lang.Workspace[a+"_name_auto_edited_title"],Lang.Workspace[a+"_name_auto_edited_content"]);return b};Entry.VariableContainer.prototype._maxNameLength=10;Entry.block.run={skeleton:"basic",color:"#3BBD70",contents:["this is","basic block"],func:function(){}};Entry.block.mutant={skeleton:"basic",event:"start",color:"#3BBD70",template:"test mutant block",params:[],func:function(){},changeEvent:new Entry.Event};
 Entry.block.jr_start={skeleton:"pebble_event",event:"start",color:"#3BBD70",template:"%1",params:[{type:"Indicator",img:"/img/assets/ntry/bitmap/jr/block_play_image.png",highlightColor:"#3BBD70",position:{x:0,y:0},size:22}],func:function(){var b=Ntry.entityManager.getEntitiesByComponent(Ntry.STATIC.UNIT),a;for(a in b)this._unit=b[a];Ntry.unitComp=Ntry.entityManager.getComponent(this._unit.id,Ntry.STATIC.UNIT)}};
 Entry.block.jr_repeat={skeleton:"pebble_loop",color:"#127CDB",template:"%1 \ubc18\ubcf5",params:[{type:"Text",text:Lang.Menus.repeat_0},{type:"Dropdown",options:[[1,1],[2,2],[3,3],[4,4],[5,5],[6,6],[7,7],[8,8],[9,9],[10,10]],value:3,fontSize:14,roundValue:3},{type:"Text",text:Lang.Menus.repeat_1}],statements:[],func:function(){if(void 0===this.repeatCount)return this.repeatCount=this.block.params[0],Entry.STATIC.CONTINUE;if(0<this.repeatCount){this.repeatCount--;var b=this.block.statements[0];if(0!==
 b.getBlocks().length)return this.executor.stepInto(b),Entry.STATIC.CONTINUE}else delete this.repeatCount}};
@@ -1969,8 +1969,8 @@ Entry.FieldColor.getWidgetColorList=function(){return["#FFFFFF #CCCCCC #C0C0C0 #
 16;this._noArrow&&(b-=12);var d=this._CONTENT_HEIGHT;this._header=this.svgGroup.elem("rect",{width:b,height:d,y:-d/2,rx:this._ROUND,ry:this._ROUND,fill:"#fff","fill-opacity":.4});this.svgGroup.appendChild(this.textElement);this._noArrow||(a=this._arrowColor||a._schema.color,this._arrow=this.svgGroup.elem("polygon",{points:"0,-2.1 6.4,-2.1 3.2,2.1",fill:a,stroke:a,transform:"translate("+(b-11)+",0)"}));this._bindRenderOptions();this.box.set({x:0,y:0,width:b,height:d})};b.resize=function(){var a=this.textElement.getComputedTextLength()+
 18;this._noArrow?a-=14:this._arrow.attr({transform:"translate("+(a-11)+",0)"});this._header.attr({width:a});this.box.set({width:a});this._block.view.alignContent()};b.renderOptions=function(){var a=this;this._attachDisposeEvent();this.optionGroup=Entry.Dom("ul",{class:"entry-widget-dropdown",parent:$("body")});this.optionGroup.bind("mousedown touchstart",function(a){a.stopPropagation()});for(var b=this._contents.options,b=this._contents.options,d=0,e=b.length;d<e;d++){var f=b[d],g=f[0],f=f[1],h=Entry.Dom("li",
 {class:"rect",parent:this.optionGroup}),k=Entry.Dom("span",{class:"left",parent:h});Entry.Dom("span",{class:"right",parent:h}).text(g);this.getValue()==f&&k.text("\u2713");(function(b,c){b.bind("mousedown touchstart",function(a){a.stopPropagation()});b.bind("mouseup touchend",function(b){b.stopPropagation();a.applyValue(c);a.destroyOption();a._selectBlockView()})})(h,f)}this._position()};b._position=function(){var a=this.getAbsolutePosFromDocument();a.y+=this.box.height/2;var b=$(document).height(),
-d=this.optionGroup.height(),e=this.optionGroup.width();if(b<a.y+d){a.x+=this.box.width+1;var b=this.getAbsolutePosFromBoard(),f=this._blockView.getBoard().svgDom.height(),f=f-(f-b.y);f-20<d&&this.optionGroup.height(f-f%20);a.y-=this.optionGroup.height()}else a.x+=this.box.width/2-e/2;this.optionGroup.css({left:a.x,top:a.y,width:e+20})};b.applyValue=function(a){this.value!=a&&this.setValue(a);this.textElement.textContent=this.getTextByValue(a);this.resize()};b.getTextByValue=function(a){if(!a||"null"===
-a)return Lang.Blocks.no_target;for(var b=this._contents.options,d=0,e=b.length;d<e;d++){var f=b[d];if(f[1]==a)return f[0]}return Lang.Blocks.no_target}})(Entry.FieldDropdown.prototype);Entry.FieldDropdownDynamic=function(b,a,c){this._block=a.block;this._blockView=a;this.box=new Entry.BoxModel;this.svgGroup=null;this._contents=b;this._index=c;this._arrowColor=b.arrowColor;c=this._contents.menuName;Entry.Utils.isFunction(c)?this._menuGenerator=c:this._menuName=c;this._CONTENT_HEIGHT=b.dropdownHeight||a.getSkeleton().dropdownHeight||16;this._FONT_SIZE=b.fontSize||a.getSkeleton().fontSize||12;this._ROUND=b.roundValue||3;this.renderStart(a)};Entry.Utils.inherit(Entry.FieldDropdown,Entry.FieldDropdownDynamic);
+d=this.optionGroup.height(),e=this.optionGroup.width()+20;if(b<a.y+d+30){var b=this._blockView.getBoard().svgDom.height(),f=this.getAbsolutePosFromBoard();this._blockView.y<b/2?(a.x+=this.box.width/2-e/2,b-=f.y+30,this.optionGroup.height(b)):(a.x+=this.box.width+1,b-=b-f.y,b-30<d&&this.optionGroup.height(b-b%30),a.y-=this.optionGroup.height())}else a.x+=this.box.width/2-e/2;this.optionGroup.css({left:a.x,top:a.y,width:e})};b.applyValue=function(a){this.value!=a&&this.setValue(a);this.textElement.textContent=
+this.getTextByValue(a);this.resize()};b.getTextByValue=function(a){if(!a||"null"===a)return Lang.Blocks.no_target;for(var b=this._contents.options,d=0,e=b.length;d<e;d++){var f=b[d];if(f[1]==a)return f[0]}return Lang.Blocks.no_target}})(Entry.FieldDropdown.prototype);Entry.FieldDropdownDynamic=function(b,a,c){this._block=a.block;this._blockView=a;this.box=new Entry.BoxModel;this.svgGroup=null;this._contents=b;this._index=c;this._arrowColor=b.arrowColor;c=this._contents.menuName;Entry.Utils.isFunction(c)?this._menuGenerator=c:this._menuName=c;this._CONTENT_HEIGHT=b.dropdownHeight||a.getSkeleton().dropdownHeight||16;this._FONT_SIZE=b.fontSize||a.getSkeleton().fontSize||12;this._ROUND=b.roundValue||3;this.renderStart(a)};Entry.Utils.inherit(Entry.FieldDropdown,Entry.FieldDropdownDynamic);
 (function(b){b.constructor=Entry.FieldDropDownDynamic;b._updateValue=function(){var a=[];Entry.container&&(a=this._menuName?Entry.container.getDropdownList(this._menuName):this._menuGenerator());this._contents.options=a;var a=this._contents.options,b=this.getValue();b&&"null"!=b||(b=0!==a.length?a[0][1]:null);this.setValue(b)};b.renderOptions=function(){var a=this;this._attachDisposeEvent();this.optionGroup=Entry.Dom("ul",{class:"entry-widget-dropdown",parent:$("body")});this.optionGroup.bind("mousedown touchstart",
 function(a){a.stopPropagation()});var b;b=this._menuName?Entry.container.getDropdownList(this._contents.menuName):this._menuGenerator();this._contents.options=b;for(var d=0;d<b.length;d++){var e=b[d],f=e[0],e=e[1],g=Entry.Dom("li",{class:"rect",parent:this.optionGroup}),h=Entry.Dom("span",{class:"left",parent:g});Entry.Dom("span",{class:"right",parent:g}).text(f);this.getValue()==e&&h.text("\u2713");(function(b,c){b.mousedown(function(a){a.stopPropagation()});b.mouseup(function(b){b.stopPropagation();
 a.applyValue(c);a.destroyOption();a._selectBlockView()})})(g,e)}this._position()}})(Entry.FieldDropdownDynamic.prototype);Entry.FieldImage=function(b,a,c){this._block=a.block;this._blockView=a;this._content=b;this.box=new Entry.BoxModel;this._size=b.size;this._highlightColor=b.highlightColor?b.highlightColor:"#F59900";this._position=b.position;this._imgElement=this._path=this.svgGroup=null;this._index=c;this.setValue(null);this.renderStart()};Entry.Utils.inherit(Entry.Field,Entry.FieldImage);
diff --git a/src/scene.js b/src/scene.js
index 783a916f46..3a9b6d920c 100644
--- a/src/scene.js
+++ b/src/scene.js
@@ -175,6 +175,7 @@ Entry.Scene.prototype.generateElement = function(scene) {
         var options = [
             {
                 text: Lang.Workspace.duplicate_scene,
+                enable: Entry.engine.isState('stop'),
                 callback: function(){
                     Entry.scene.cloneScene(scene);
                 }
diff --git a/src/variable_container.js b/src/variable_container.js
index 5151ad4eb5..eda87cb862 100644
--- a/src/variable_container.js
+++ b/src/variable_container.js
@@ -772,6 +772,7 @@ Entry.VariableContainer.prototype.checkAllVariableName = function(name,variable)
     }
     return false;
 };
+
 Entry.VariableContainer.prototype.addVariable = function(variable) {
     if (!variable) {
         var variableContainer = this;
@@ -780,6 +781,9 @@ Entry.VariableContainer.prototype.addVariable = function(variable) {
         if (!name || name.length === 0)
             name = Lang.Workspace.variable;
 
+        if (name.length > this._maxNameLength)
+            name = this._truncName(name, 'variable');
+
         name = this.checkAllVariableName(name,'variables_') ? Entry.getOrderedName(name, this.variables_, 'name_') : name;
         var info = panel.info;
         variable = {
@@ -1023,6 +1027,7 @@ Entry.VariableContainer.prototype.addMessage = function(message) {
     this.messages_.unshift(message);
     Entry.playground.reloadPlayground();
     this.updateList();
+    message.listElement.nameField.focus();
     return new Entry.State(this,
                            this.removeMessage,
                            message);
@@ -1162,6 +1167,10 @@ Entry.VariableContainer.prototype.addList = function(list) {
             name = Lang.Workspace.list;
 
         var info = panel.info;
+
+        if (name.length > this._maxNameLength)
+            name = this._truncName(name, 'list');
+
         name = this.checkAllVariableName(name, 'lists_') ? Entry.getOrderedName(name, this.lists_, 'name_') : name;
         list = {
             name: name,
@@ -2277,3 +2286,17 @@ Entry.VariableContainer.prototype.removeRef = function(type, block) {
 Entry.VariableContainer.prototype._getBlockMenu = function() {
     return Entry.playground.mainWorkspace.getBlockMenu();
 };
+
+Entry.VariableContainer.prototype._truncName = function(name, type) {
+    name = name.substring(0, this._maxNameLength);
+    var title, content;
+
+    title = Lang.Workspace[type + '_name_auto_edited_title'];
+    content = Lang.Workspace[type + '_name_auto_edited_content']
+
+    Entry.toast.warning(title, content);
+
+    return name;
+};
+
+Entry.VariableContainer.prototype._maxNameLength = 10;
diff --git a/src/workspace/field/dropdown.js b/src/workspace/field/dropdown.js
index b33f14c48a..5cc6b6034b 100644
--- a/src/workspace/field/dropdown.js
+++ b/src/workspace/field/dropdown.js
@@ -193,27 +193,36 @@ Entry.Utils.inherit(Entry.Field, Entry.FieldDropdown);
 
         var documentHeight = $(document).height();
         var optionGroupHeight = this.optionGroup.height();
-        var optionGroupWidth = this.optionGroup.width();
+        var optionGroupWidth = this.optionGroup.width() + 20;
 
         //not enough space below
-        if (documentHeight < pos.y + optionGroupHeight) {
-            pos.x += this.box.width + 1;
-
-            var relPos = this.getAbsolutePosFromBoard();
+        if (documentHeight < pos.y + optionGroupHeight + 30) {
             var domHeight = this._blockView.getBoard().svgDom.height();
-            domHeight -=  domHeight - relPos.y;
+            var relPos = this.getAbsolutePosFromBoard();
+            //above the half of dom
+            if (this._blockView.y < domHeight/2) {
+                pos.x += this.box.width/2 - optionGroupWidth/2;
 
-            if (domHeight - 20 < optionGroupHeight) {
-                domHeight -= domHeight % 20;
+                domHeight -= relPos.y + 30;
                 this.optionGroup.height(domHeight)
-            }
+            } else {
+                pos.x += this.box.width + 1;
 
-            pos.y -= this.optionGroup.height();
+                domHeight -=  domHeight - relPos.y;
+
+                if (domHeight - 30 < optionGroupHeight) {
+                    domHeight -= domHeight % 30;
+                    this.optionGroup.height(domHeight)
+                }
+
+                pos.y -= this.optionGroup.height();
+
+            }
         } else pos.x += this.box.width/2 - optionGroupWidth/2;
 
         this.optionGroup.css({
             left: pos.x, top: pos.y,
-            width: optionGroupWidth + 20
+            width: optionGroupWidth
         });
     };