Setting a complete effect on a ProgressBar control in Flex

<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2008/03/15/setting-a-complete-effect-on-a-progressbar-control-in-flex/ -->
<mx:Application name="ProgressBar_completeEffect_test"
        xmlns:mx="http://www.adobe.com/2006/mxml"
        layout="vertical"
        verticalAlign="middle"
        backgroundColor="white">
 
    <mx:Script>
        <![CDATA[
            private var timer:Timer;
 
            private function init():void {
                timer = new Timer(10);
                timer.addEventListener(TimerEvent.TIMER, timer_timer);
            }
 
            private function timer_timer(evt:TimerEvent):void {
                progressBar.setProgress(progressBar.value + 1, 100);
            }
 
            private function progressBar_complete(evt:Event):void {
                timer.stop();
            }
 
            private function resetProgressBar():void {
                progressBar.setProgress(0, 100);
                progressBar.scaleX = 1.0; // 100%
                progressBar.scaleY = 1.0; // 100%
                progressBar.alpha = 1.0; // 100%
            }
 
            private function playProgressBar():void {
                resetProgressBar();
                timer.start();
            }
        ]]>
    </mx:Script>
 
    <mx:Parallel id="progressBar_completeEffect">
        <mx:Fade alphaTo="0.0" />
        <mx:Zoom zoomHeightTo="0" />
    </mx:Parallel>
 
    <mx:ApplicationControlBar dock="true">
        <mx:Button label="Play"
                click="playProgressBar();" />
        <mx:Button label="Reset"
                click="resetProgressBar();" />
    </mx:ApplicationControlBar>
 
    <mx:ProgressBar id="progressBar"
            complete="progressBar_complete(event);"
            completeEffect="{progressBar_completeEffect}"
            mode="manual"
            labelPlacement="center"
            width="80%"
            height="60%"
            creationComplete="init();" />
 
</mx:Application>