[otrs] Postmaster filter to modify article or ticket title via X-OTRS header ?

Context: We receive "User Account Lockout" messages sent to OTRS by another system via SMTP. I'm already using a postmaster filter to assign the customer account on these tickets. I'd also like to update the article/ticket title at the same time so that the dashboard view is more descriptive. Question: Is there an X-OTRS header for this purpose? Hugh