I have a parent issue in project FO, with the issuetype "Vendor Agreement", that has a linked issue (created) in project CSD and a second linked issue (created) in project ISSD. I want to use automation to transition that parent issue to "Procurement Review" whenever both of the issues get closed/resolved/done. Here is what I have, but it isn't working. (Obviously, or I wouldn't be writing you! /;-] )

What is the correct working for the IF statement to say "when all linked issues of this particular issue type are closed?"
Thanks for any help!