Fullscreen command to enalrge just one video container

programming flash
1

I already have a website that brings up FLV videos in a container named myVideo

I just want a button elsewhere in FLash movie to make that video window fullscreen.

I have:
btn_Fullscreen.onRelease = function(){
Stage[“displayState”] = “fullScreen”;
}

which works for making the whole stage fullscreen. But how can I get it for just the myVideo movie clip?