[Paraview] Volume rendering for unstructured grids

[Atanas Atanasov]

Hello,
i have a c++ servermanager application and i want to display a volume 
for given vtk file. I am using the vtkSMProxy classes. For the file 
reading i have the <internal_sources,legacyreader> proxy and for the 
volume representation i have the UnstructuredGridVolumeRepresentation. 
At this point i can't see anything in my window. Should i change 
something in the code. At the end i want to have the result as in 
paraview after selecting the volume choice as representation.
Regards,
A.Atanasov