split tags

i have the song title and artist tags both in the title field.

i want to split them so i can have them in their proper field

currently it looks like

TITLE - ACDC-TNT
ARTIST - Various

and i want it like

TITLE - TNT
ARTIST - ACDC

is there any script which will let me split them at the "-" cos i cant find a way yet


Create an action of the type "Guess value" for %title%
Pattern: %artist%-%title%