Loadmovie() / gotoandplay

im having a problem with
Loadmovie()

im trying to load a movie and gotoandplay it

like this

var placeholder:MovieClip = this.createEmptyMovieClip("monster", 5);
monster.loadMovie(_root.monsterfile);
monster._x = placeholder._x;
monster._y = placeholder._y;
on first frame of the movie
in a movieclip
_root.playerattack("melee","earth")
_root.placeholder.monster.gotoandplay("hit")

but it doesn’t work :S
it does load the movieclip though

this is really bothering me :S