How do you evaluate if there is 2 discs or not I'm under Rename?

[DevXen]

@ohrenkino

I would clear those discnumber fields first that apparently have no decent contents.

The square brackets in a format string serve as "if" operator.
So %album%[ - %discnumber%]
would lead to
The Lamb lies down on broadway - 1
if %discnumber% is 1
and to
Abacab
if discnumber is not filled.

Perhaps this is what you are looking for.

Thanks to both of you, I actually was able to get it to work with this (In Case anyone else needs to get it working):
$if($grtr($right(%discnumber%,1),1),Disc 0$num(%discnumber%,1) - ,)