# Strange TweenEvent.MOTION\_START problem, not dispatching

**URL:** <https://forum.kirupa.com/t/strange-tweenevent-motion-start-problem-not-dispatching/230853>\
**Category:** flash\
**Created:** [June 29, 2007, 12:43pm UTC](https://forum.kirupa.com/t/strange-tweenevent-motion-start-problem-not-dispatching/230853 "2007-06-29T12:43:43Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![baseSignal](https://avatars.discourse-cdn.com/v4/letter/b/bc79bd/32.png) [@baseSignal](https://forum.kirupa.com/u/baseSignal)\
**Post date:** [June 29, 2007, 12:43pm UTC](https://forum.kirupa.com/t/strange-tweenevent-motion-start-problem-not-dispatching/230853/1 "2007-06-29T12:43:43Z")

</div>

I’m having trouble getting the TweenEvent.MOTION\_START to work.

This doesn’t work???

```auto

public function tweenTest():void{
var t:Tween = new Tween(shape, Tweenables.Y, Elastic.easeOut, 100, 300, 2, true);
            t.addEventListener(TweenEvent.MOTION_START, onTweenEvent);
}

private function onTweenEvent(te:TweenEvent):void{
            trace(te.position);    
}

```

But this code does work???

```auto

public function tweenTest():void{
var t:Tween = new Tween(shape, Tweenables.Y, Elastic.easeOut, 100, 300, 2, true);
            t.addEventListener(TweenEvent.MOTION_STOP, onTweenEvent);
}

private function onTweenEvent(te:TweenEvent):void{
            trace(te.position);    
}

```

It seems like the start event is just not firing? Has anyone come across this, is there something else I need to do to get the motion start event to dispatch?

Thanks in advance