Steps to Reproduce

1. check Axis.java

	public void setMinorTicks(boolean minorTicks) {
		setAttr(DAttrs.minorTicks, false);
	}

Current Result

it doesn't set the value with the parameter

Expected Result

set the value with the parameter

workaround

chart.getXAxis().addExtraAttr("minorTicks", new AnyVal<Boolean>(true));