>Nothing prevents this, but I was hoping to hide all calculations in the class. My present problem is that my app ( FP 2.5 DOS) has been in use for 7 years. Over that time we have developed 6 distinct types of customers. My report files are almost unreadable with conditional if piled upon conditional if. I want to get away from this but insure that the proper code is applied to each customer class, otherwise what is the real advantage of custom classes?

Could you give true definition of your customer class?