unloadMovieNum...what's wrong?

1

I’m trying to stop a film clip from playing when users click a button to go to the next frame with this code

on(Release) { _root.gotoAndPlay(16); }
    {
    	unloadMovieNum(1);
    }
    

but I get a *: Statement must appear within on handler *{ , what am I doing wrong?

Sorry for being so stoooopid

Yossi