Hi,
I am trying to setup a Jira automation rule to post a comment on the issue whenever the related issue is updated. To be precise and to give some context, whenever a particular issue type is ranked higher or lower, I need to automatically add a comment on the issue saying : Issue was ranked higher/lower by {{user}} on {{date}}.
I researched a bit on this and only way I could find in setting this up was by reading the changelog description {{issue.changelog.Rank.toString}} which unfortunately returns EMPTY in the log action and with which I cannot thereby proceed.
Can someone help me out with this request or any details to a thread or article explaining how I can implement this would be more than appreciated. I will attach a screenshot of what I have so far.

Thanks in advance.