# setMask with mc Tween problem

**URL:** https://forum.kirupa.com/t/setmask-with-mc-tween-problem/166142
**Category:** flash
**Created:** [October 17, 2005, 4:36pm UTC](https://forum.kirupa.com/t/setmask-with-mc-tween-problem/166142 "2005-10-17T16:36:43Z")
**Posts on this page:** 1
**Page:** 1

<div class="post-metadata">

### Author: ![Grimshaw](https://avatars.discourse-cdn.com/v4/letter/g/439d5e/32.png) [@Grimshaw](https://forum.kirupa.com/u/Grimshaw)
#### Post date: [October 17, 2005, 4:36pm UTC](https://forum.kirupa.com/t/setmask-with-mc-tween-problem/166142/1 "2005-10-17T16:36:43Z")

</div>

This doesnt quite work like I want. The setMask propery it not masking an externally loaded clip.

Basically the mask\_mc should mask any movie loaded into holder\_mc. The user will click on a button which should tell the holder\_mc what movie to load and should shrink the mask\_mc. After the movie is loaded, the mask\_mc should grow to the specified dimensions, showing the new movie. In theory this should be pretty simple, but it just doesnt seem to work.

This is a perfect little movie for any type of site. It could have also more funtionality with the mask tween, but I’m not shure yet how to set that.