How to make the customfiled inactive or hide?

[Dmitry]

How to make the customfiled inactive or hide?

[Suhas P]

You can hide the field from Field configuration scheme for the particular project.

[Dmitry]

when the request is closed, a screen with fields opens, I need to write a script on sil, let's say if the performer = x, then hide the field

[Suhas P]

If you use Script Runner add on, you can do using Behaviour plugin. See some examples here,

https://scriptrunner.adaptavist.com/4.1.3.7/jira/recipes/behaviours/field-readonly-except-role.html

[Dmitry]

if not the author, and the custom field?