RLDC chart and moving average

vlkr

Hi everyone!
I am trying to add a moving average line to a simple line chart in a Visual Studio Report. There's a HowTo by Microsoft (http://msdn.microsoft.com/en-us/library/cc281082.aspx). Sounds quite easy. The problem is, I don't have the choice of "Add Calculated Series" when right-clicking a field in the values area.
Did anyone here implement a moving average successfully? There seems to be no note about this feature deactivated or something for Visual Studio Reports for Dynamics NAV 2009.
Of course the moving average could be implemented in the report object, but that wouldn't be as smart as doing it by property in VS.