# Problem with Tween

**URL:** <https://forum.kirupa.com/t/problem-with-tween/312485>\
**Category:** flash\
**Created:** [August 4, 2010, 4:59pm UTC](https://forum.kirupa.com/t/problem-with-tween/312485 "2010-08-04T16:59:53Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![walerka](https://avatars.discourse-cdn.com/v4/letter/w/ea5d25/32.png) [@walerka](https://forum.kirupa.com/u/walerka)\
**Post date:** [August 4, 2010, 4:59pm UTC](https://forum.kirupa.com/t/problem-with-tween/312485/1 "2010-08-04T16:59:53Z")

</div>

i have function:

```auto
public function onDataClick(event:Event):void {
	Data = new Tween(Data, "alpha", None.easeOut, 1, 0, 0.75, true);
		return;
}

```

when compilation i see error:

> TypeError: Error #1034: Type Coercion failed: cannot convert fl.transitions::Tween@21132389 to flash.display.MovieClip.

why? how solve?