If you only want to insert a value in case some other parameter is set to some other value. For example, |if “Parameter 1” is “value a” then “Parameter 2″| will only insert the value of Parameter 2 if Parameter 1 is value a. You can also add “else” at the end to include a value of, for example, Parameter 3, if Parameter 1 is not value a. For example: |if “Parameter 1” is “value a” then “Parameter 2” else “Parameter 3″|.