Stress in the blade of a wind turbine

Hello.
I am studying the flow of air over the blade of a wind turbine and I would like to get the stress inside the blade and the force on the blade. I tried a volume goal with a cut plot to obtain the results in a section of the blade but it is not working.
Concerning my simulation, I generated a rotating region around the blades but I cab get a volume goal while having a rotating region.
Could anyone help me?
Thanks

SolidworksFlow Simulation