How to get last comment in filter or JQL?

[Logistics1520]

I need to compare "reporter" with "last comment author full name". Can anyone tell me, how can i do it please?

I made custom text field "LastCommentAuthorFullName" and automated it to be:
{{issue.comments.last.author.displayName}}

but i cant compare it to reporter field.

Thank you in avdance.

[Alvaro Martinez]

Hi @LaurenS @Tomas Arguinzones, have you been able to solve when mentions are showed with user number or userID instead of the name? I tried changing the filed render to "wiki style" but nothing has changed.