Forces to be calcualted in different patches
 

Hi Foamers:
I am calculating the forces of a train.stl cases, it contains different patches like bogie, pantagraph, coach body, etc. I want to export the forces of different patches, so I write all the patches in the forces function file, but it does not work, the forces.dat file are alway the total forces, Can anyone help me with this, Thank you so much for that.

the OF version i used is v2.1.1