Encodes real integer value into a string by offsetting and zero-padding
            number up to the specified number of digits.  Use this encoding method if the data
            range set includes both positive and negative values.
            
 Declaration Syntax
 Declaration Syntax Return Value
 Return ValueA string representation of the integer
 Remarks
 Remarks
            For example, the integer value -123 offset by 1000 with a maximum of 6 digits would be:
            -123 + 1000, padded to 6 digits: 000877