flex 15 ProgressBar Test

ProgressBarTest.mxml
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">
 <mx:Panel width="320" height="100" layout="absolute" horizontalCenter="0" verticalCenter="0" title="Progressbar Test">
 <mx:ProgressBar indeterminate="false" horizontalCenter="-28" verticalCenter="0" labelPlacement="center" minimum="0" maximum="100" enabled="true" mode="manual" id="pb" themeColor="#66FF00" height="20" width="200"/>
 <mx:Button label="click" id="b1" click="clicked()" width="50" height="20" verticalCenter="0" horizontalCenter="105"/>
 <mx:Script>
  <![CDATA[
   import mx.controls.Alert;
   var i:uint;
   var timerid:uint=0;
   function increase():void{
    pb.setProgress(i+=1, 100);
    if(i==100){
     mx.controls.Alert.show("완료");
     clearInterval(timerid)
    };
   }
   function clicked():void{
    timerid=setInterval(increase,10);
   }
  ]]>
 </mx:Script>
 </mx:Panel>
</mx:Application>