Button within Movie Clip won't link!

Hey, I’m very new to flash and thought I’d join the forums as I’m sure to have many problems in future!

My issue at the moment is trying to make a Button (early_btn) within a Movie Clip, on the 10th frame of the MC, go to frame 2 on the stage when clicked

Here’s the code I have:

function histEarly(event:MouseEvent):void{
	event.target.parent.gotoAndStop(2);
}

early_btn.addEventListener(MouseEvent.CLICK, histEarly);

There are no errors when exported but nothings happening!

Should the AS be in the MovieClip where the button is? Or should it be on the stage? Or even a completely different code?!

Thanks!

Jimmy