Postmaster filter for Empty Emails

Hello! I am trying to create a trigger for empty emails received via zammad. The idea is to set a trigger for emails that have no subject and body text. Such emails/users should receive an auto reply to provide more details. I had asked earlier here and for me it works for Empty Subject but the tickets/emails with no body are still not being tagged.

I am unsure about how to do it and would appreciate some help!

I mean…

I made a mistake while testing and one of the solutions works for the empty subject but not for empty emails. The topic was closed so I made a new one