# Why the filters in paraview are in freeze form?

**URL:** https://discourse.paraview.org/t/why-the-filters-in-paraview-are-in-freeze-form/6577
**Category:** In Situ Support
**Tags:** python, vtk
**Created:** [March 2, 2021, 5:53am UTC](https://discourse.paraview.org/t/why-the-filters-in-paraview-are-in-freeze-form/6577 "2021-03-02T05:53:07Z")
**Posts on this page:** 1
**Showing post:** 9

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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: [March 24, 2021, 6:42pm UTC](https://discourse.paraview.org/t/why-the-filters-in-paraview-are-in-freeze-form/6577/9 "2021-03-24T18:42:04Z")

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> [@I've just opened my dataset. I can't add filters, and everything is greyed out](https://discourse.paraview.org/t/ive-just-opened-my-dataset-i-cant-add-filters-and-everything-is-greyed-out/4511):
>
> Make sure your dataset is selected in the Pipeline Browser Click apply (in the Properties tab) if the apply button is green

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