I have created two project custom fields that it seems that I cannot use them to create queries. Is ther any way to use Project Custom Fields in Queries?
The version that we are using is OpenProject 4.2.9

Hello Stelios,

on the work package page you can only filter for custom fields of type Work package (since only work packages are shown in the list, not projects).
The custom fields of type project are displayed when creating new project (project create form) and when editing project (project settings).

Best regards,
Robin