content profile field problem

I use gvs to visualize graph from webform submissions data (using Webform Views Submitted Data module). I have successful pie charting all the web components using SQL Aggregation: Group By Fields (using Views GroupBy module, webform submitted data as fields to group on, and Fields to Aggregate with the SQL function: Nid -> Count SQL function).

but when i tried to use fields from content profile (mapped from content profile node relationships), gvs cannot see the fields both for label and value-1 list. I have the correct selection of all views parameter, since I got the correct views results using views table style. any idea?

Thanks for the great module for all of us, I appreciate all your works.