# Find Data with Query selection doesn't work

**URL:** https://discourse.paraview.org/t/find-data-with-query-selection-doesnt-work/4873
**Category:** ParaView Support
**Created:** [July 17, 2020, 12:27pm UTC](https://discourse.paraview.org/t/find-data-with-query-selection-doesnt-work/4873 "2020-07-17T12:27:24Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![emmanuel\_madarassou1](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/e/67e7ee/32.png) [@emmanuel\_madarassou1](https://discourse.paraview.org/u/emmanuel_madarassou1)
#### Post date: [July 17, 2020, 12:27pm UTC](https://discourse.paraview.org/t/find-data-with-query-selection-doesnt-work/4873/1 "2020-07-17T12:27:25Z")

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Hi everyone, I’m trying to select cells from a vtu by his name with the Find Data widget. I’m getting this error: Expression '(GeometryNames == " did not produce a valid mask array

Here is my find data input:  
 ![Capture](https://discourse.paraview.org/uploads/default/original/2X/6/6467e0a054c8432367a3080e7c186f4bc57ce0a0.png) ")’

What am I doing wrong ?

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### Author: ![utkarsh.ayachit](https://discourse.paraview.org/user_avatar/discourse.paraview.org/utkarsh.ayachit/32/39_2.png) [@utkarsh.ayachit](https://discourse.paraview.org/u/utkarsh.ayachit)
#### Post date: [July 17, 2020, 12:28pm UTC](https://discourse.paraview.org/t/find-data-with-query-selection-doesnt-work/4873/2 "2020-07-17T12:28:57Z")

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FindData does not support comparing strings currently. An issue has been reported [here](https://gitlab.kitware.com/paraview/paraview/-/issues/20039).