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Drill down not working on Firefox




I have created line chart and added 'click' event as you specified in demo. Here is the code sample:

var chartDiv = document.getElementById('historyChartContainer');

chartDiv.addEventListener("click", gridDrillDown, false);

and callback function is:

function gridDrillDown(evt){


var iSeries = evt.series;


var iPoint = evt.point;



if (iSeries != undefined && iPoint != undefined) {

alert(iSeries +" - " +iPoint);

alert(assetForecastedGraph.getData().getItem(iSeries, iPoint));


//if(iPoint < 4){






Its working correctly in Google Chrome, but not working in FireFox. I am getting right series index, but NaN as point.

Please help me, if I am doing something wrong here.


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