How can I comment on a Parent issue as part of a Post-Function of the Subtask?

[Steven F Behnke]

I am of course specifically referring to Script Runner.

I've seen lots of examples for looking at subtasks, and many examples of commenting on linked issues. I haven't seen a great example of accessing the parent issue and setting a comment there.

Use case

1. I have a multi approval workflow using conditions and post-functions, as well as multi-user picker fields
2. When the subtask is fully approved by all approval steps and people, this indicates a change in the parent issue.
3. The parent issue should receive a comment along the lines of, "Change Request CR-1211 has been approved. Requirements may have changed."

Specifically, the issue has a Closed status and Close Issue transition. Ideally, the event fires as a post-function of Close Issue.

[JamieA]

It's the same as any of the other examples for commenting on an issue, but you will pass to commentManager.create: issue.parentIssueObject instead of just "issue".

[Steven F Behnke]

I'll scope it out, I think that was my issue, I didn't know how to access the parent object.