EFFECT_END never dispatched

Steps to reproduce:
1. run the code below
2.
3.

Actual Results:
effect never ends, thus EFFECT_END event never triggered

Expected Results:
triggered EFFECT_END event

Workaround (if any):
None

private function playEffect():void
{
var uiComponent:UIComponent = new UIComponent();
// here we supposed to set its background & add to stage, and then:

var compositeEffect = new CompositeEffect();
compositeEffect = new Sequence();

var effect:Animate = new Move3D();
effect.xBy = 100;
effect.yBy = 100;
effect.duration - 300;

compositeEffect.addChild(move3d);
compositeEffect.addEventListener(EffectEvent.EFFECT_END, onEffectEnd, false, 1, true);
compositeEffect.target = uiComponent;
compositeEffect.play();
}

private function onEffectEnd(event:EffectEvent):void
{
//in this case, this will never be triggered
}