When a new issue is created, I want to auto transition the issue in the workflow ONLY if a custom date field named <start date & time> is < 3 days from <Today's date> which would force a custom pop up screen on the transition.
I'm thinking I'd use the Post Function "Transition Issue" with a conditional Groovy Script as it asks. However, I have no idea how to write the Groovy Script.
**I do not have Script Runner**