Can't access button in flv skin


I am using a flvplayback component which I have attached to my own skin.

I want to be able to target the full screen toggle button since I can’t get the fullscreen to work and others posts have led me to think that it might be better to code that bit myself.

For the skin fla the button that I want to get at has this written in the properties class box “”

I figured I might be able to get at this from my main timeline so I added the code below :

function edward(event:MouseEvent):void{
 trace ("the button was pressed");
}, edward);

which doesn’t work. It says “access of undefined property fl” - which I can kindof understand…

Anyway, what should I write please to access that button?