I have a chart that when I process it in the view by itself renders just fine. Here is the code:

					ColumnChart::create(array(
						"dataSource"=>$byEvent,
						"title"=>"All Events",
						"columns"=>array(
							"title",
							"amount"=>array("label"=>"Amount Collected", "type"=>"number", "prefix"=>"$", 
								"annotation"=>function($row) {
									return "$".number_format($row['amount']);
								}),
							)
					));

Now when I place this same chart inside a drilldown I get an error: Call to a member function countData() on null at libraries/koolreport/packages/chartjs/Chart.php:178

Here is the code as a drilldown:

    DrillDown::create(array(
    	"name"=>"eventDrillDown",
    	"title"=>"Event Transaction Report",
    	"levels"=>array(
    		array(
    			"Title"=>"All Events",
    			"content"=>function($params, $scope) {
					ColumnChart::create(array(
						"dataSource"=>$byEvent,
						"title"=>"All Events",
						"columns"=>array(
							"title",
							"amount"=>array("label"=>"Amount Collected", "type"=>"number", "prefix"=>"$", 
								"annotation"=>function($row) {
									return "$".number_format($row['amount']);
								}),
							)
					));
					
				}
    		))
    ))	

Any ideas of what I am doing wrong here?

Yes, that works, Thank you.