The routine returns a null. The routine returns a value. The opposite of null value is value. You were attempting a double-negative. ************************************************** To post a message to austechwriter, send the message to austechwriter@xxxxxxxxxxxxxx To subscribe to austechwriter, send a message to austechwriter-request@xxxxxxxxxxxxx with "subscribe" in the Subject field. To unsubscribe, send a message to austechwriter-request@xxxxxxxxxxxxx with "unsubscribe" in the Subject field. To search the austechwriter archives, go to www.freelists.org/archives/austechwriter To contact the list administrator, send a message to austechwriter-admins@xxxxxxxxxxxxx **************************************************