[fowlplay4]

Well for starters, you shouldn't have functions in functions like that..

Also, you're mixing GS1 with GS2..

Instead of message you do..

this.chat = "a test message!";

And to reference TextEdit fields you have to use:

MyGUI_TextEdit1.text

So "message SPC "MyGUI_TextEdit1" SPC;"

Looks like:

this.chat = MyGUI_TextEdit1.text;