actionscript-3 - AS3 Altering variable within movieclip's parent

Question

I am trying to alter a variable within the parent or root of a movieclip with:

this(root).variable

So far I've only encountered errors, and I'm not sure how to fix them. The variable is on the stage.

The current error is:

TypeError: Error #1034: Type Coercion failed: cannot convert flash.display::Stage@28b7ef99 to flash.display.MovieClip.

Does anyone know what I'm doing wrong?
It seems like that works for everyone else.

Answer 1

試す

Movieclip(parent).variable

Answer 2

もしかして ：

this.root.variable 

また

this.parent.variable