Confiforms - Loop thru Issues to Get Watchers for All Issues

[JiraAdmin]

Using Confiforms , I have a Jira JQL filter that returns a list of Jira Issues. I need to get the Watchers for each of the Issues. The result Watchers list will be used as a distribution list for an email.

I have the Issue list but can't figure out how to get the Watchers for all of those issues.

Can you direct me? 

Thank you.