Insert Vector Data into vtkPolyData Object?

Hey

Simplifying my last post and deleting it

I’m using vtk python(8.1.0) in Anaconda. I’ve read polygon data in from .vtp files using vtkXMLPolyDataReader() and have a vtkPolyData object. I would like to update its Cell data to include additional vector data. I haven’t been able to figure this out - there is no SetCellData method. Any suggestions? Is this even possible?

Thanks
KSH