You use the CVErr function to create error values. For example, he following code creates two error values.
NoRadius = CVErr(50000) NotANumber = 50001 InvalidArgument = CVErr(NotANumber)
User-defined error values are always stored in a variable of the Error data type, which is a subtype of the Variant data type. For more information about the Error data type, see "Storing Values in Variant Variables" in Chapter 2.