private function formatPie($report, $reportData)
{
	...

	App::uses('HighchartsAppController', 'Highcharts.Controller');
	$this->Highcharts = $this->Components->load('Highcharts.Highcharts');
	$this->Highcharts->initialize($this);
	
	$pieChart = $this->Highcharts->create($chartName, 'pie');
        $this->Highcharts->setChartParams(...);
	
	...	
}