# Mesh tags

**URL:** https://discourse.vtk.org/t/mesh-tags/7011
**Category:** Support
**Created:** [October 29, 2021, 8:30am UTC](https://discourse.vtk.org/t/mesh-tags/7011 "2021-10-29T08:30:03Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![hamid\_badi](https://discourse.vtk.org/user_avatar/discourse.vtk.org/hamid_badi/32/895_2.png) [@hamid\_badi](https://discourse.vtk.org/u/hamid_badi)
#### Post date: [October 29, 2021, 8:30am UTC](https://discourse.vtk.org/t/mesh-tags/7011/1 "2021-10-29T08:30:03Z")

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Hello,

I use gmsh which supports physical tags for geometric entities, this information is exported as a scalar “CELL\_DATA” in the vtk file but i don’t know how to see this information in the multiblock inspector.  
I read i must use the vtkCompositeIndex or vtkBlockColors, but how to link it with tags in the vtk file ?

Best regards.