# Can't Select Threshold Filter

**URL:** https://discourse.paraview.org/t/cant-select-threshold-filter/7442
**Category:** ParaView Support
**Created:** [June 18, 2021, 11:59am UTC](https://discourse.paraview.org/t/cant-select-threshold-filter/7442 "2021-06-18T11:59:54Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![User2021](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/u/d6d6ee/32.png) [@User2021](https://discourse.paraview.org/u/User2021)
#### Post date: [June 18, 2021, 11:59am UTC](https://discourse.paraview.org/t/cant-select-threshold-filter/7442/1 "2021-06-18T11:59:54Z")

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Hi All,

I have a shear stress output data set in paraview. I want to apply the threshold filter to remove values below a certain point, but its greyed out and I cannot select it.

Can anyone advise what to do?

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### Author: ![mwestphal](https://discourse.paraview.org/user_avatar/discourse.paraview.org/mwestphal/32/17_2.png) [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [June 18, 2021, 1:42pm UTC](https://discourse.paraview.org/t/cant-select-threshold-filter/7442/2 "2021-06-18T13:42:49Z")

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Place your mouse on the gryed out filter and look at the status bar, bottom left. ParaView will tell you why it cannot be used.