onLoad problem

programming flash
1

Why doesn’t this work:

    evilguy = attachMovie("evil", "evil"+_root.getNextHighestDepth(), _root.getNextHighestDepth(), {_x:start_enemy_x, _y:start_enemy_y});
    evilguy.onLoad = function() {
        enemies.push(this._name);
        trace(enemies);
    };

It doesn’t trace the array, so I don’t think the onLoad event has worked.
Thanks