Movie won't attach

1

Here’s my code:

function loadMenu1():Void{
 this.attachMovie("aboutevbc1btn", "aboutevbc1", this.getNextHighestDepth());
 aboutevbc1._y = 44;
 aboutevbc1._x = 7;
 aboutevbc1.onRelease = function(){
  _level0.menu2 = "aboutevbc";
  trace(_level0.menu2);
  this.menu2.removeMovieClip();
  this.attachMovie("Menu_2", "menu2", this.getNextHighestDepth());
 }

No errors show in the output panel. The Menu_2 symbol (movieclip) does not attach. Any ideas?