[flexcoders] Refresh Screen Counter

[itdanny2002]

I have below sample code which display
the result of counter. How can I 
display the progress by using some
screen refresh function ?

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"; 
layout="absolute">
<mx:Script>
        <![CDATA[               
                private function Counter():void{
                        for (var i:int;i <400000;i++){
                                counter.text = i.toString();    
                        }
                }
        ]]>
</mx:Script>
        <mx:Button x="37" y="36" label="Button" click="Counter();"/>
        <mx:Label id="counter" x="37" y="10" text="Label"/>
        
</mx:Application>