I need to append text to a cloned helper object when it's dragged over a droppable object.
Is there a way to trigger a callback on hover over a droppable object?
If I understand correctly, you want something to happen when the draggable is over the droppable?
If so, just use the over event:
$('.iamdroppable').droppable({
over: function() {
//do something here
},
});