value of each sector on pie graph in viz chart sap ui5

I have a pie chart using viz ui5

oController.ticketsgraph = new sap.viz.ui5.controls.VizFrame('graph',{vizType : "pie",vizProperties : { title:{ text : "Details " },

plotArea: { colorPalette : d3.scale.category20().range(), drawingEffect: "glossy" } }, width : "100%", });

attached a flattened data set and add feed to the pie chart.

but i just want to print the value on each part of piechart we are getting the value when we hover on the graph instead of that value must be printed on chart

as below

Please do the needful

Regards

Prasad