PMSE Inbox: Extend Search for CAS Title

Dear Sugar Experts,

I have the problem that the search function in the module Processes (psme_inbox) is not sufficient for us, because we cannot search for the names of the entries belonging to the process number. Example: The search works only if I search for the process definition "ABC". But if I want to search for the CAS Title "123", nothing is found.

How can I extend the search to the CAS Title, i.e. the name of the record on which the process is running?

Thanks for your support in advance!

Kind regards
Martin