'Grandchild' Button activivating instance on parent

[pixelden]

Hi there

Just wondering how I reference A button that I have within a movie clip, within a movieclip to and instance on the parent timeline.

At the moment I am using, but not getting the correct result:

MovieClip(parent).NavBar.gotoAndPlay("About");

Any help will be much appreciated, many thanks (attached is the Flash file)!

[Baby Minion]

it would be better if the parent created an eventlistener for the button and the have the parent handle the action rather than the button itself.