import mx.collections.ArrayCollection;
[Bindable]
public var myCollection:ArrayCollection = new ArrayCollection();
public function initTimer():void
{
var myTimer:Timer = new Timer(1000, 0);
myTimer.addEventListener(TimerEvent.TIMER, timerHandler);
myTimer.start();
}
public function timerHandler(event:TimerEvent):void
{
var o:Object = {};
o.number = Math.random() * 100;
myCollection.addItem(o);
}