Multiple mc spawning

programming flash
1

I read a bunch of tutorials and I cant get multiple mc’s to spawn. I have this button so that when you click it, it spawns an mc that you can drag around. So I spawn one drag it around, then try to spawn another but that deletes the old one and makes a new one. Here is my code:


on(release){
 var i;
 i++;
 var newname = "bullet"+i;
 _root.attachMovie("bullet", newname, i*100);
 _root[newname]._y = _root.hero._y+13;
 _root[newname]._x = _root.hero._x+55;
 _root[newname].onEnterFrame = function() {
  if (this._x>555) {
   this.removeMovieClip();
  }
 }
}

Thanks for any help.