Hi there,
I am looking for a simple way to add a post function to my workflow which updates all linked issues (if they are part of certain different projects) with a simple comment, maybe adding including some variable such as issue key.
Example (closing A-123, linked issue is B-456)
if linked issue is in project B, C, D then add a comment: "The linked issue A-123 has just been resolved with the following resolution: $resolution/fieldvalue"
Is this possible? How? 
Thanks for you help!