Dynamically update highcharts via setData for Yii-created Highcharts Widget - yii

Question

Is it possible to update a highcharts chart using the chart.series[i].setData method if the chart has been created by the Yii extension? I have used highcharts before without Yii extension and able to reference my variables once I set the chart up via declared variable var chart = .... I would just like to to able to call the setData methods for a Yii-created highcharts...this is current code for creating chart:
$this->Widget('ext.highcharts.HighchartsWidget', array(
'id' => 'shop_pie',
'options' => array(
'chart' => array(
'backgroundColor' => '#efefef'
),
'colors' => $colors,
'title' => array('text' => 'Shop'),
'plotOptions' => array(
'pie' => array(
'showInLegend' => 'true',
'dataLabels' => array(
'formatter' => 'js:function(){return this.point.y}',
'distance' => -10,
'color' => '#000'
),
),
'series' => $results['series'],
)
));
My ajax call to update the chart:
"$('#city_filter').on('change',function(e) {
$.ajax({
url: ". $quotedUrl . ",
data: { 'cities': e.val },
success: function(data) {
$('#name_span').text(data[0]);
//chart.series[0].setData(data[1]); // THIS IS WHERE I NEED TO BE ABLE TO REFERENCE THE CHART
}
});
});",
Many thanks in advance.
Andy

Answer 1

"$('#city_filter').on('change',function(e) {
$.ajax({
url: ". $quotedUrl . ",
data: { 'cities': e.val },
success: function(data) {
$('#name_span').text(data[0]);
var chart = $('#shop_pie').highcharts();
chart.series[0].setData(data[1]); // THIS IS WHERE I NEED TO BE ABLE TO REFERENCE THE CHART
}
});
});",
referring to
http://api.highcharts.com/highcharts#Series.setData
and example from that article
http://jsfiddle.net/gh/get/jquery/1.7.2/highslide-software/highcharts.com/tree/master/samples/highcharts/members/series-setdata/