How do I customize a issue picker field view

[Robert Breunung]

I confugured single issue picker (from scriptrunner addon) as a custom field in a ticket. By default it is appearing like this:

Now I would like to change shown information in this line and I have seen in the admin field configuration there is something like a view property related. I attach a photo of the preview in the configuration screen.

Am I on a wrong path or is there a way to customize the appearence of the line in my first picture?

Can you give me a hint on how to get a customized line the best way. I would like to see the Epic name and not the priority.