I tried to add a comment using addComment: https://docs.exalate.com/docs/addcomment-6226057

But this does not seem to work. 

issue.comments = commentHelper.addComment("Resolution changed to done", issue.comments)
--> This comments the issue but it's showing the same comment twice.

issue.comments = commentHelper.addComment("Custom made comment", false, issue.comments)
--> This does not work.

Please let me know if someone has tried this and if it works.

Cheers,
Sujan