jQuery UI clone help

JavaScript
1

The following code only makes one copy (clone) of the original element. After the clone is dragged (and dropped), I can no longer make another clone of the original element.
I want the original element to be cloned every time it is dragged. Can someone steer me in the right direction?

$(function(){
		$(".droptrue").draggable({
                			snap: '#dropTargetframe',
                			connectToSortable: '#dropTargetframe',
                			helper: 'clone',
                                   	cursor: 'move',
                			revert: false
			});

		$("#dropTargetframe").sortable({
                			revert: false
			});

		$("#dropTargetframe").droppable({
                			revert: 200,
                			receive: cloneMe
 			});

		function cloneMe(event, ui) {
    			ui.item.clone().appendTo('#dropTargetframe');
			}
	});