I am trying to implement Sunburst chart drilldown action conditionally on click event. Say if am doing a Shift+Click then I would like to change the clicked sector's color. And if I just do a Click then I would like to drilldown or up. The implemented code works fine, but it works only on the subsequent click/shift+click action, not during the first click.

Here's the implementation

Event: click: function (event) {

if (event.shiftKey) {
    chartT.series[0].update({
        allowTraversingTree: false
    });
    this.series.chart.redraw();

    this.color = "blue";

} else {
    chartT.series[0].update({
        allowTraversingTree: true
    });
    this.series.chart.redraw();

    chartT.series[0].data[0].doDrilldown();
}

}

Any help is appreciated. Thanks!