anchor.diff:  	[].forEach.call(cols, function(col) {
   		addDragFeature(col);
   	});
  +	
  +	var count = parseInt($("#COUNTER").val(), 10);
  +	console.log("Initial identifier: " + count);
  +	
  +	function freshIdentifier(){
  +		count++;
  +		console.log("Fresh identifier: " + count);
  +		return count;
  +	}
   
   	function addDragFeature(elt) {
   		elt.addEventListener('dragenter', handleDragEnter, false);
  
positive.code: 		if (blockDragged.className.includes("template")) {
  			console.log("cloning...");
  			blockDragged = blockDragged.cloneNode(true);
  			$(blockDragged).removeClass("template");
  
  			//Retrieve the space Container in the fresh dragged Block
  			var spaceContainer = blockDragged.childNodes[1];
  
negative.code: 	<aui:fieldset class="fieldset">
  	
  	<input name="<%=renderResponse.getNamespace()%>JSON" id="JSON" type="hidden" value="coucou" />
  	<input id="COUNTER" type="hidden" value="${counter}"/>
  		
  	<%-- Scenario Title --%>
  	<legend class="fieldset-legend">
  