Parent - Child Relation: width issue

I probably am missing something, but when I change the width of a parent movieclip, the width of the child movieclip also changes.

Like I start with this:

and do

parent.width *= 2;

then the width of the child will also double, which I don’t want to happen. Is there some kind of property I need to set so that the width of the child does not change when the width of the parent changes?


Thanks!