It says "String Expected"

@DDBL 26@ is just a variable. It isn't an actual field in the database. I think that is the problem.

I don't know how to get it into a real expression.

For now I ended up just created 50 different templates for the different versions needed and deleted any unnecessary fields (e.g. IF ([# of donations]= "1",Print,Skip).

Works for now, but would love to figure out how to do it in an expression.