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On value commit in a TextArea, display value by reference its id

<?xml version="1.0" encoding="utf-8"?> <mx:Application     xmlns:s="library://ns.adobe.com/flex/spark"      xmlns:mx="http://www.adobe.com/2006/mxml">     <mx:Script>         import mx.controls.Alert; public function         showMsg(msg:String):void {              Alert.show(msg);          }     </mx:Script>     <mx:Panel title="Profile" verticalCenter="0" horizontalCenter="0">         <s:Label text="Profile Summary" fontWeight="bold" />         <mx:TextArea id="aboutYou" textAlign="center" width="100%" height="40" valueCommit="showMsg(aboutYou.text)" />     </mx:Panel> </mx:Application>