How to change font? don`t work fontFamily

[Bob Les]

var chart = new CanvasJS.Chart(targetName, {
title: {
text: sectionGroupName==null||sectionGroupName.length==0?””:sectionGroupName,
fontSize: 20
},
toolTip: {
fontStyle: “normal”
},
axisX: {
lineThickness: 1,
gridThickness: 0,
labelFontSize: 11,
labelAngle: 0,
labelWrap :true,
labelFontFamily: “Calibri, Tahoma, Arial, Gulim, Dotum”
},
axisY: {
lineThickness: 0,
gridThickness: 1,
maximum: 100,
labelFontSize: 11,
labelFontFamily: “Calibri, Tahoma, Arial, Gulim, Dotum”
},
axisY2: {
lineThickness: 0,
gridThickness: 1,
maximum: 100,
interval: 10,
labelFontSize: 11,
labelFontFamily: “Calibri, Tahoma, Arial, Gulim, Dotum”
},
legend:{
fontSize: 11,
},
dataPointMaxWidth: 20,
dataPointMinWidth: 20,
data: dataDynamic
});
return chart;

cetain computer default fontFamily ‘Calibri’
cetain computer default fontFamily ‘Gulim’ or ‘Dotum’
so setOption labelFontFamily like “Calibri, Tahoma, Arial, Gulim, Dotum” but don`t working
why don`t work labelFontFamily?
and almost computer have font ‘Calibri’, ‘Gulim’, ‘Dotum’ ..etc
why different default fontFamily? Although set labelFontFamily like “Calibri, Tahoma, Arial, Gulim, Dotum”
before render chart