How to print the long name of Select List (multiple choices) ?

[Oliver]

I'm using a Groovy post-function in my workflow and I want to have an automatic comment which prints out a Select List (multiple choice).

In the UI the custom field says "Test A - Test B" - exactly what I want.

However, when I print the field using:

(issue.get("customfield_13840"));

It returns:

[null:Test A - Test B]

I'm a bit stuck so any suggestions greatly appreciated! 

[JamieA]

I think this is something specific to Jira Misc Workflow Utilities? issue.get(x) points to something other than an Issue object, and I think JMWE uses a wrapper.