Re: Error No. - 4420

John, On this topic, what would happen if the IF statement was something like IF ... THEN PRINT col(20),3charfield,col(30),field ELSE PRINT col(20),varcharfield,col(30),field END IF In this case the TRUE portion of the IF would generate only 1 line, whilst the second part COULD generate 2 lines. The compiler would have no way of knowing. I would say that as a rule I try to avoid any conditional processing in headeres and trailers. Malcolm Weallans