I have defined the formula in a Last Field Value Change Date/Time Field as:
@Field: fixVersions -->
however, this is never populating. Is there something wrong in the syntax? I've also tried using "Fix Version/s" which is how it appears in Change History, which is what you're supposed to use for custom fields. Neither ever seems to work.
My use case is I would like to be able to build a report that shows scope change for a specific release, or group of releases, based on the Fix Version field being updated.