Update TextArea with an ActionScript function when clicking the Button
<?xml version="1.0"?> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"> <mx:Script> public function handleClick():void { text1.text="A"; } </mx:Script> <mx:Button id="button1" label="Click here!" width="100" fontSize="12" click="handleClick();" /> <mx:TextArea id="text1" /> </mx:Application>