Not an answer....
But this is the official Nokia dev thread for the area of functionality you're inquiring about.
http://talk.maemo.org/showthread.php?t=79023&page=16

Abustany's been quiet in the last few wks, but it is the time of year for that.
It may have already been answered so before asking, try & search 1st.
And you may have to bump a few times, or wait for quite a while.