AS2 to AS3 form of this code: [Stage.scaleMode="noScale";]?

hey,

in flash AS1,2 you just input this code

Stage.scaleMode=“noScale”;

on a frame of the main stage to prevent scaling of movieclips on fullscreen.
I tried the same thing in AS3 and its not working for me. so my question is how would i apply this in AS3?

cheers

oh, and also the Stage.align = “yx”;