diff --git a/view/vConst.js b/view/vConst.js
index 5bc9204..7b80f82 100644
--- a/view/vConst.js
+++ b/view/vConst.js
@@ -113,7 +113,7 @@ ACS.vConst = {
   MODELVIEW_MODELDESIGNERHEADER: "Model Designer",
   MODELVIEW_GUIDESIGNERHEADER: "GUI Designer",
   MODELVIEW_LISTVIEWHEADER: "List view",
-  MODELVIEW_MODELDESIGNERSIZEX: 3000,
+  MODELVIEW_MODELDESIGNERSIZEX: 4000,
   MODELVIEW_MODELDESIGNERSIZEY: 2000,
   MODELVIEW_FOCUSRECTCOLOR: "rgba(213, 241, 239, 0.3)",
   MODELVIEW_FOCUSRECTSTROKECOLOR: "rgb(17, 234, 196)",