How can I add validation when linked issues' status is completion?

[jun lee]

I want to add validation for transition when liked issue "is contained in" and status is "Completion".

If issue A contains issue B and C and  issue A can be transited when status of issue B and C is "Completion". However issue B and C can be transited to "Completion" regardless of the status of issue A.

Can you tell me script for this?

Below script doesn't work.

issue.resolutionObject.name == "Resolved" || issueLinkManager.getOutwardLinks(issue.id)*.issueLinkType.name.contains('is contained in')