SAPUI5 sap.viz.ui5.StackedColumn How to y axis label in Angle format

Dear Experts

I have created  StackedColumn chart.  Y-Axis  name . Unable to display completely name.   I used :-   sap.viz.ui5.StackedColumn  

I want to display StackedColumn Chart y-Axis name in 45 Angle Degree . So I can display complete Name.

Kindly Help me.

Regards,

Pankaj Kamble