Automatically re-open a closed task when a new comment is added

Question

We have a workflow where an external system (Zendesk) can update Jira.  When Zendesk updates a JIRA ticket/task that is closed, the comment is added but the ticket/task stays in the Closed status.

Aside from adding a transition from Closed to Open (which I know to do) is there any way to trigger the status change automatically when a comment is added to a Closed ticket/task?

Dennis Poort · Answer

Totally missed the cloud tag. Script Runner not available for you indeed, as @Timothy Chin  mentioned below.

Dennis Poort · Answer

Oh yes you're right. Totally missed the cloud tag. Indeed, not available for him then.

Timothy · Answer

I would think an addon like Script Runner could do the trick for you because it can look for a commented state.

Too bad. Scriptrunner is not available on Cloud.

The general idea is to have an auto transition but yeah, you're on Cloud and limited to what you can add ons you can install.