Im developing a MMORPG then i hit a snag, [Probably something simple to fix which i forgotten ]

Code:
     this.onEnterFrame = function():Void {
_root.charicon.duplicateMovieClip(logged_username, logged_id);
_root.logged_username._x = 200;
logged_username & logged_id hold data from when the user logged in. But when i try make the moveiclip just made move it wont? This would help me alot as pritty much anything else i can do