[vtkusers] problems with vtkVoxelModeller

[Luis Sainz Hermoso]

Dear vtkusers
	I'm trying to convert an vtkPolyData to a vtkStructuredPoints.
	I've been using the voxelModel.tcl example and it works fine but
I tried to write the output of the vtkVoxelModeller object in a file
and I only got zeros.
	I've tried to write the output in a file with a
vtkStructuredPointsWriter, to read the file with a
vtkStructuredPointsReader. The input of the vtkContourFilter is this
StructuredPoints. And when I render the scene I can't see anything.
	Could someone tell me what's happening?
	Thank you very much  
	
		Luis