In de "backlogs" en "tags" poller de functie aanroepen ( $scope.tagsPbiCount(); )
Functie in MainCtrl plakken

$scope.tagsPbiCount = function(){
	//Laurens show pbis script
		if($rootScope.backlogitems && $rootScope.backlogitems.length > 0 && $rootScope.tags){
			for(var x in $rootScope.tags){
				var count = 0;
				var tag = $rootScope.tags[x];

				for(var i=0; i < $rootScope.backlogitems.length; i++){
					var pbi = $rootScope.backlogitems[i];

					if(pbi.tag){ // if pbi has tags, loop through tags of pbi
						for(var z=0; z < pbi.tag.length; z++){
							var pbiTag = pbi.tag[z];

							if(pbiTag.name == tag.name){ // if name of pbi tag == name of current then count++
								count++;
							}
						}
					}
				}
				tag.amountPbis = count; // assign count to tag
			}
		}
	}