Regular expressions - geting beat!

Hi all, I just downloaded tons of psy songs, and they came properly tagged, but there are many different artists.

So I'd like to re-tag them, renaming TITLE to "ARTIST - TITLE", and renaming ARTIST to "Various Artists".

Visual example:

Artist: Rinkadink
Artist: Various Artists
Title: Rinkadink - Crazy

I tried right click -> convert -> actions -> regular expression:
Field: TITLE
Regular expression: /*
Replace matches with: %artist% - %title%

But it won't work.. I tried lots of different combinations with no luck :frowning: Can anyone lay a hand? Thank you.

Placeholders like %artist% cannot be used with this action.
Choose "Format value"

Thank you man it worked!!