Can't figure out how to create a custom field for podcast

I have been trying for awhile now and nothing seems to work. I am entering $metasep(podcast,\\) in the "Value" line and it appears as a column but nothing I add shows up. What am I doing wrong?

Did you have a look at the help on columns?

And while you are at it: "Scripting" is also a good topic for $meta_sep()

And the list of fields might also be of interest.

You probably need to add %podcast% to Field.

And the correct scripting syntax would also help

vs
$meta_sep(podcast,\\)