Link a button inside a movie clip to a scene

I am trying to link a button that is inside a movie clip to a scene. The button has the instance name "cosmetic_btn" and the scene is called "Cosmetic Treatments".

On my main timeline I have the code:

cosmetic_btn.addEventListener(MouseEvent.CLICK, clickHandler);

function clickHandler(evt:MouseEvent):void {

gotoAndStop(1, "Cosmetic Treatments");

}

And on the timeline inside the movie clip I have this code:

MovieClip(root).gotoAndStop("Cosmetic Treatments");

When I run the document I get the following error:

I have the instance name "cosmetic_btn" set on the button so I am unsure what is wrong here?

http://img600.imageshack.us/img600/3236/gp2g.png