# Dynamic Masking

**URL:** <https://forum.kirupa.com/t/dynamic-masking/308050>\
**Category:** flash\
**Created:** [April 16, 2010, 1:54am UTC](https://forum.kirupa.com/t/dynamic-masking/308050 "2010-04-16T01:54:51Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![kleelof](https://avatars.discourse-cdn.com/v4/letter/k/b77776/32.png) [@kleelof](https://forum.kirupa.com/u/kleelof)\
**Post date:** [April 16, 2010, 1:54am UTC](https://forum.kirupa.com/t/dynamic-masking/308050/1 "2010-04-16T01:54:51Z")

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Hello,

I’m having a problem with dynamic masking. Here is an explanation of what I am doing:

I built a scroller class. When it is created, it adds one MC that will later hold the items added to the scroller. This is added to the scroller. Next it draws a new MC, adds it to scroller and assigns it as the mask for the scroller.

Next I added a MC to the scroller that contains some text and other MC’s. The text is Ok, but the MC’s on the added MC cannot be seen.

One odd thing is when I built the scroller, the test app did the same thing,and the MC’s on the MC being added to the scroller appeared just fine.

So, I suppose my question would be, are there any obvious reasons you would not be able to see the child MC’s of a MC behind a mask?

take care,  
lee