# Using PNG with transparency as a mask

**URL:** <https://forum.kirupa.com/t/using-png-with-transparency-as-a-mask/239218>\
**Category:** flash\
**Created:** [September 19, 2007, 5:16pm UTC](https://forum.kirupa.com/t/using-png-with-transparency-as-a-mask/239218 "2007-09-19T17:16:30Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![kaykills](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.kirupa.com/kaykills/32/228_2.png) [@kaykills](https://forum.kirupa.com/u/kaykills)\
**Post date:** [September 19, 2007, 5:16pm UTC](https://forum.kirupa.com/t/using-png-with-transparency-as-a-mask/239218/1 "2007-09-19T17:16:30Z")

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I know this is all over the forum, however I have not really seen a working example of what I am looking to achieve. I am not an expert flash developer and have been looking for a specific example of a png that has transparency in it. Basically my png is a shape that is wavy. I wanted to use that shape as a mask in flash. When I use the bitmap as a mask in flash it doesn’t see the transparent part of the image.

If anyone has any insight into this it would help me greatly. Even if I can just see a working example and/or code it would help me out.

Cheers,  
Michael