Variable name Enter a descriptive name for the calculation variable. The name can be a maximum of 100 characters. If left blank, an error message will appear. Note: The calculation variable name can only contain letters and numbers, must not contain spaces or special characters or start with a number. See Also Variable description Enter a brief description about the calculation variable. See Also Source of derived value Select the source of derived value for this calculation variable. Your choices are: • Calculation • Filter • Join Path • Global Variable See Also