ActionScript 3.0 :: Coding Button Inside Lee Scroller

I have added a button to Lee's scroller * ; to the 'content' movie clip, inside the scroller. Testing the movie, Flash recognises the mouse click -and doesn't give me any compiler errors- however, the button doesn't function. I am guessing my code isn't well enough written to get the playhead to move within the main timeline, as it is embedded in a movie clip (the content mc) within another movie clip (the scroller mc), perhaps. Using AS3, what additional code do I need to add to what I already have written?

My code for the button:
// handle events for back to menu button ...
btnbacksmilejapan.addEventListener(MouseEvent.CLICK, clickJapanSmiletoMenu);
function clickJapanSmiletoMenu (evtObj:MouseEvent) {
//trace shows what's happening ... in the output window
trace ("The Japan Smile back toMenu button was clicked")
// go to the Menu
gotoAndPlay("scene two jpn");
}