How to format values with dounughts charts

Hi all,

I'm creating a doughnut facet chart like the multi series chart in the showcase (http://www.smartclient.com/smartgwtee/showcase/#multiSeriesChart_gridview).

I'd like to know to format values in each pie chart (each month) to show percentages.

Any idea on how to do that?


Note: I'm using smartgwt 4.0p

Thanks in advance