Previously I was able to add some automation and on a transition set a field to the current user using:
def currentuser = ComponentAccessor.jiraAuthenticationContext.loggedInUser.getUsername()
def IVVuser = getFieldByName("IVV Acceptance Validator")
And according to ScriptRunner's current API (6.20.0) that's supposed to work. In my googling I've also seen people suggest
Neither of these gives an error but they also don't set the form's value to the current user. I've tried every ApplicationUser interface method (getKey(), getName(), etc) thinking I just needed to figure out the correct format accepted by the form user field but I'm stumped.
I could use your ideas. Thanks,