We are trying to set up a GCF for SSO and the external website says we need to send a REFERER header (set to a specific URL) with the POST to get the authentication to work. There is a way to do this in the "authenticate" section of the XML file (using the <HEADER> tag. see example on page 80 of GCF Implementation Guide for Luminis 5.0.3). However, I need to send the referer header from the pickup-response in the properties file. Any suggestions?