It seems to be working for me, are you pressing the copy button or selecting in the field? Where are you pasting?
i tryed both and niether of them worked. i dont know if its just something wrong with my computer or something. i chose the black mini poodle dawg and the computer room. when i copied the code i could still paste it like in the game if that makes sense but when i went to post it outside of the game nothing happened. super cute game tho it looks so good:p