# Placing a mask over the random motion movie

**URL:** <https://forum.kirupa.com/t/placing-a-mask-over-the-random-motion-movie/156673>\
**Category:** flash\
**Created:** [July 27, 2005, 11:22am UTC](https://forum.kirupa.com/t/placing-a-mask-over-the-random-motion-movie/156673 "2005-07-27T11:22:51Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![tid](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.kirupa.com/tid/32/1563_2.png) [@tid](https://forum.kirupa.com/u/tid)\
**Post date:** [July 27, 2005, 11:22am UTC](https://forum.kirupa.com/t/placing-a-mask-over-the-random-motion-movie/156673/1 "2005-07-27T11:22:51Z")

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I recently followed [kirupa.com](http://kirupa.com)’s random motion tutorial. It all worked fine but now i wish to place a mask ove it so it apears through a ‘window’ in my movie.  
For example, imagine the red part below is where i want the random motion visible and the black part is where i wish it to be hidden:  
 ![](http://i2.photobucket.com/albums/y21/tid/example.bmp).

I know this can be acheived because it apears as a banner on the kirupa site. If you need to know i am using Flash mx. Thanks in advance, Tid

P.S. I have already tried simply placing a mask over the layer with the actions script on.