[Solved] Mark tickets as Unseen

[FiL]

Is there a possibility to mark tickets as unseen?
I looked in the database and changed the ticket_value in the ticket_flag table to "0". But nothing happend.
I also tried to delete the rows but the ticket is still "read" (no star)

Any ideas?

[FiL]

Found the solution. I have to change the owner to another one. (Postmaster for example)