Drop targets and drag items

Hi there,

I'm creating a scrabble game and was wondering if there any way to put a variable of some sort on drag items or drop targets that will allow you to put any one of a number of identical items on the same target.  Confusing I know... here's a picture... As you can see there are 3 E's.... I want the learner to be able to use any of the E tiles on any of the 3 matching targets...  This was my attempt at creating a variable.  Thanks for any thoughts and ideas.