diff --git a/keywords.txt b/keywords.txt
new file mode 100644
index 0000000..da96567
--- /dev/null
+++ b/keywords.txt
@@ -0,0 +1,10 @@
+#######################################
+# Syntax Coloring Map For Espalexa
+#######################################
+
+#######################################
+# Datatypes (KEYWORD1)
+#######################################
+
+Espalexa	KEYWORD1
+EspalexaDevice	KEYWORD1
\ No newline at end of file
diff --git a/library.properties b/library.properties
index cbacdd1..ff24b23 100644
--- a/library.properties
+++ b/library.properties
@@ -1,5 +1,5 @@
 name=Espalexa
-version=2.3.2
+version=2.3.3
 author=Christian Schwinne
 maintainer=Christian Schwinne
 sentence=Library to control an ESP module with the Alexa voice assistant
diff --git a/src/Espalexa.h b/src/Espalexa.h
index 6adb967..7c079a3 100644
--- a/src/Espalexa.h
+++ b/src/Espalexa.h
@@ -10,7 +10,7 @@
  */
 /*
  * @title Espalexa library
- * @version 2.3.2
+ * @version 2.3.3
  * @author Christian Schwinne
  * @license MIT
  * @contributors d-999
@@ -46,7 +46,7 @@
 #include <WiFiUdp.h>
 
 #ifdef ESPALEXA_DEBUG
- #pragma message "Espalexa 2.3.2 debug mode"
+ #pragma message "Espalexa 2.3.3 debug mode"
  #define EA_DEBUG(x)  Serial.print (x)
  #define EA_DEBUGLN(x) Serial.println (x)
 #else
@@ -112,7 +112,7 @@ class Espalexa {
     }
     res += "\r\nFree Heap: " + (String)ESP.getFreeHeap();
     res += "\r\nUptime: " + (String)millis();
-    res += "\r\n\r\nEspalexa library v2.3.2 by Christian Schwinne 2019";
+    res += "\r\n\r\nEspalexa library v2.3.3 by Christian Schwinne 2019";
     server->send(200, "text/plain", res);
   }
 
@@ -222,6 +222,7 @@ class Espalexa {
   void alexaOn(uint8_t deviceId)
   {
     devices[deviceId-1]->setValue(devices[deviceId-1]->getLastValue());
+    devices[deviceId-1]->setPropertyChanged(1);
     devices[deviceId-1]->doCallback();
   }
 
@@ -229,6 +230,7 @@ class Espalexa {
   void alexaOff(uint8_t deviceId)
   {
     devices[deviceId-1]->setValue(0);
+    devices[deviceId-1]->setPropertyChanged(2);
     devices[deviceId-1]->doCallback();
   }
 
@@ -241,6 +243,7 @@ class Espalexa {
     } else {
      devices[deviceId-1]->setValue(briL+1); 
     }
+    devices[deviceId-1]->setPropertyChanged(3);
     devices[deviceId-1]->doCallback();
   }
 
@@ -248,6 +251,7 @@ class Espalexa {
   void alexaCol(uint8_t deviceId, uint16_t hue, uint8_t sat)
   {
     devices[deviceId-1]->setColor(hue, sat);
+    devices[deviceId-1]->setPropertyChanged(4);
     devices[deviceId-1]->doCallback();
   }
 
@@ -255,6 +259,7 @@ class Espalexa {
   void alexaCt(uint8_t deviceId, uint16_t ct)
   {
     devices[deviceId-1]->setColor(ct);
+    devices[deviceId-1]->setPropertyChanged(5);
     devices[deviceId-1]->doCallback();
   }
 
@@ -346,6 +351,7 @@ class Espalexa {
     if (len > 0) {
       packetBuffer[len] = 0;
     }
+    espalexaUdp.flush();
 
     String request = packetBuffer;
     EA_DEBUGLN(request);
@@ -391,7 +397,8 @@ class Espalexa {
   {
     server = request; //copy request reference
     String req = request->url(); //body from global variable
-    if (request->hasParam("body", true)) // workaround should Alexa send incorrect content type
+    EA_DEBUGLN(request->contentType());
+    if (request->hasParam("body", true)) // This is necessary, otherwise ESP crashes if there is no body
     {
       EA_DEBUG("BodyMethod2");
       body = request->getParam("body", true)->value();
diff --git a/src/EspalexaDevice.cpp b/src/EspalexaDevice.cpp
index 9ba1d9e..70f5cdb 100644
--- a/src/EspalexaDevice.cpp
+++ b/src/EspalexaDevice.cpp
@@ -39,6 +39,11 @@ String EspalexaDevice::getName()
   return _deviceName;
 }
 
+uint8_t EspalexaDevice::getLastChangedProperty()
+{
+  return _changed;
+}
+
 uint8_t EspalexaDevice::getValue()
 {
   return _val;
@@ -120,6 +125,12 @@ uint8_t EspalexaDevice::getLastValue()
   return _val_last;
 }
 
+void EspalexaDevice::setPropertyChanged(uint8_t p)
+{
+  //0: initial 1: on 2: off 3: bri 4: col 5: ct
+  _changed = p;
+}
+
 //you need to re-discover the device for the Alexa name to change
 void EspalexaDevice::setName(String name)
 {
diff --git a/src/EspalexaDevice.h b/src/EspalexaDevice.h
index dc8040a..0974ff3 100644
--- a/src/EspalexaDevice.h
+++ b/src/EspalexaDevice.h
@@ -13,6 +13,7 @@ class EspalexaDevice {
   CallbackColFunction _callbackCol;
   uint8_t _val, _val_last, _sat = 0;
   uint16_t _hue = 0, _ct = 0;
+  uint8_t _changed = 0;
   
 public:
   EspalexaDevice();
@@ -23,12 +24,14 @@ class EspalexaDevice {
   bool isColorDevice();
   bool isColorTemperatureMode();
   String getName();
+  uint8_t getLastChangedProperty();
   uint8_t getValue();
   uint16_t getHue();
   uint8_t getSat();
   uint16_t getCt();
   uint32_t getColorRGB();
   
+  void setPropertyChanged(uint8_t p);
   void setValue(uint8_t bri);
   void setPercent(uint8_t perc);
   void setName(String name);