Copy Field Value in another field

[ohrenkino]

@fracta

$IF($%PL Deer Jade%=1,PL Deer Jade-,)

This is no valid MP3tag scripting syntax.
I doubt that you can define a format string for a tag panel element, you can select only a field which is read and written to.

If you want to copy the field contents of one field to another, see the FAQs

Actions and batch-operations

How to copy one field value to another field? Example how to copy the content of the ARTIST field to the ALBUMARTIST field: Create a new action in an existing action group or make a new action group. Action type: Format value Field: ALBUMARTIST Format string: %artist% Note: If you want to copy all possible values of a field (in case you have multiple artist fields), the internal scripting function $meta_sep can be used in the format string, e.g., $meta_sep(artist,\\\\)

If you want to add contents to a multi-value field, try as
Format string: $metasep(composer,\\)\\PL Deer Jade-