Hello Jam,
Download HICharts.zip file and extact it. You will get HICharts.js file. Replace this file on the above location “…\hi\apache-tomcat-9\webapps\hi-ee\js\vendors” (before replacing do take a backup of the file present here).
After that in the open the card in edit mode, and put this below code at the JSeditor
hi_container.set("postExecution",function(c){
var widgetText = $("#widget-value")[0].innerHTML
widgetText = widgetText.replace(/(\d)(?=(\d\d)+\d$)/g,"$1,");
$("#widget-value")[0].innerHTML = widgetText
});
Note : Above code is must to insert in JS Editor at report level and there are no UI driven customization script applied.
Thank You,
Helical Insight.