# Controling mcs on stage with a class (how?)

**URL:** <https://forum.kirupa.com/t/controling-mcs-on-stage-with-a-class-how/283689>\
**Category:** Uncategorized\
**Created:** [March 10, 2009, 1:07am UTC](https://forum.kirupa.com/t/controling-mcs-on-stage-with-a-class-how/283689 "2009-03-10T01:07:14Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![tati](https://avatars.discourse-cdn.com/v4/letter/t/3be4f8/32.png) [@tati](https://forum.kirupa.com/u/tati)\
**Post date:** [March 10, 2009, 1:07am UTC](https://forum.kirupa.com/t/controling-mcs-on-stage-with-a-class-how/283689/1 "2009-03-10T01:07:14Z")

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I have a main ButtonClassTest class that extends the MovieClip class. Then I have a ButtonTest9 class that extends this ButtonClassTest and a ButtonTest9.fla.

It works fine (click, rollover, etc) when I link a movieclip in the library of my ButtonTest9.fla to ButtonTest9 and place instances of this mc on stage (button1\_mc and button2\_mc). However, I’m not being able to control anything about the instances themselves, like, setting button1\_mc.alpha = .5 in my ButtonTest9 class.

I tried a whole bunch of things, like [FONT=“Courier New”]Stage.[/FONT], [FONT=“Courier New”]this.[/FONT], putting it into functions, not linking the mc in the library and using [FONT=“Courier New”]new ButtonTest9[/FONT] instead… Each thing gives me a different error.

There must be a simple way to do this. Can anyone please, please help? Many thanks!