can anyone help with a duplicateMovieClip flash problem?

[ajax?]

I am using the below code, the first time it creates a new box but when I click the button the second time the first box diapears! can anyone help?on (release) {id = "square_"+_root.i;trace(id);duplicateMovieClip(_ro ot.box2,id,1);_root[id]._x = random(550);_root[id]._y = random(150);_root.i++;_root.id._name = "circle"+_root.i;}