Pop-up message for drag and drop (after all correct)?
Is it possible to have a pop-up message display after the last drop location has been completed? I do not want the user to have to click the submit button. In this activity, drag items snap back to start location if they are dropped incorrectly, so, once the last item is correctly dropped, the activity is complete. I would like this last item to trigger the congratulations message. Also, the items can be dropped in any order, so I will not know which item will be the last item.