# VTK: Unable to define two sets of CELL\_DATA

**URL:** https://discourse.paraview.org/t/vtk-unable-to-define-two-sets-of-cell-data/7253
**Category:** ParaView Support
**Tags:** vtk
**Created:** [May 19, 2021, 8:46pm UTC](https://discourse.paraview.org/t/vtk-unable-to-define-two-sets-of-cell-data/7253 "2021-05-19T20:46:47Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![Victor\_Saouma](https://discourse.paraview.org/user_avatar/discourse.paraview.org/victor_saouma/32/4946_2.png) [@Victor\_Saouma](https://discourse.paraview.org/u/Victor_Saouma)
#### Post date: [May 19, 2021, 8:46pm UTC](https://discourse.paraview.org/t/vtk-unable-to-define-two-sets-of-cell-data/7253/1 "2021-05-19T20:46:47Z")

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I can define only one of the two sets of CELL\_DATA without error. When I specify the second one, I get and error"Unsupported cell attribute type: cell\_data"  
[Mesh.vtk](https://discourse.paraview.org/uploads/short-url/n88hZl81ABbgt9nTpHQJV2Fz5ci.vtk) (260.0 KB)  
It is an unstructured mesh (finite element), and am trying to assign first integer values to a cell, and then a float one

Thanks

victor

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### Author: ![Victor\_Saouma](https://discourse.paraview.org/user_avatar/discourse.paraview.org/victor_saouma/32/4946_2.png) [@Victor\_Saouma](https://discourse.paraview.org/u/Victor_Saouma)
#### Post date: [June 7, 2021, 2:56am UTC](https://discourse.paraview.org/t/vtk-unable-to-define-two-sets-of-cell-data/7253/2 "2021-06-07T02:56:55Z")

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Silly error, I should not have defined twice the CELL\_DATA anchor.  
I sure wish that someone will write a truly comprehensive manual for VTK (but then agian, maybe that is how it is meant to be)

victor