startValue : Number

Sets the starting value of custom scale break.

Default: null
Example: 20,30,100,500 
var  chart =  new  CanvasJS.Chart("chartContainer",
{
 .
 .
axisY: {
	scaleBreaks: {
		customBreaks: [{
			startValue: "200",
			endValue: "4500",
			.
			.
		}]
	}

},
 .
 . 
});
chart.render();
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