Removing +

Hi I am very confussed and have tried verythign but for the love of me I cannot work out how to remove a + from my file name. IE my Filename is A+Gift+of+Love+feat+Fedde+La+Grange.

All I want to do is use the tag function and copy the Filename above to the Artist Columb replacing the + with a space ?

Can anyone help me please.

Thank you

Convert | Tag - Tag | ALT+5

Field:
_FILENAME
... or ...
Field:
ARTIST

Format string:
$replace(%_FILENAME%,'+',' ')

Preview
From: A+Gift+of+Love+feat+Fedde+La+Grange
To: A Gift of Love feat Fedde La Grange

DD.20140731.1810.CEST