The code from "help" doesn't work?\

Hi

I'm trying to change the color of the font of the TextArea component to white. I use this code which I copy and paste directly from "help":

import mx.styles.CSSStyleDeclaration;
if (_global.styles.TextArea == undefined) {
_global.styles.TextArea = new CSSStyleDeclaration();
}
_global.styles.TextArea.setStyle("color", 0xFFFFFF);

Doesn't work...
I try this one, again from the "help":

myTextAreaComponent.setStyle("color", 0xFFFFFF)

Again doesn't work...
Any clue????
Also, if a movie with a TextArea component is under a mask the text isn't seen. What can I do about it? But this is a less significant problem, the color of the text is what concerns me most.