Set assignee based on (customfield=userpicker) via (JMWE add-on)

Question

Hello all,
I'm struggling at setting assignee //

Problem: When I'm creating issue, i want to set up " Assignee " as choosen user in my customfield // as you can see, it's user picker (single user)

Resolution I would like to have: 1) I would like to have any script(code) which I can put into the workflow on create transition in post-function. (JMWE add-on)
2) ... or via Behaviours?

Are you able to show me the code with filled example?
Example:
Customfield name: Maid Users
customfield_10555

I'm really new at scripting and I would like to get help.
Ask me, if you want define something! :)

Thanks forward for all advices!

BR,

David Fischer · Accepted Answer

The easiest is not to use scripting at all. Just add a Copy value from field to field post-function on the Create transition to copy from the Maid Users field to the assignee field.