Drag and drop issue

Hi,

I would like to create a drag and drop with 10 draggable text boxes. Only 2 of them have to be drag. (2 correct answers only, the others ones have to stay in the initial place) So I would like to have a state for those who are dragged inside the target (red if incorrect - green if correct) and the others (who should not be dragged at all, staying in the initial position) have to stay black. (initial state)

However, when I submit the drag and drop game, all text boxes are appearing red for the "incorrect dragged state"...

How can I do ? Many thanks!