Problem with movie-clip visibility

[THP]

Hi,

I have a (hopefully small) problem: I'm trying to disable a button (which works fine) - and also the small icon I use to characterize the button (which doesn't work):

if (_global.skill1 == 0){
skill_1_btn._visible = false;
icon_skill_1._visible = false;}
else null;

I double checked the name of the movie clip (the lower one) - it's the name of the instance not of the movie clip in general. I also tried using "alpha" instead of "visibility". Does anybody have an idea what I'm doing wrong?

Thanks in advance!
THP

[THP]

Nevermind ... found a workaround.