Populating &VARIABLES from an external portal

We are attempting to pass information from a portal, located on one server, to webfocus, which is located on a separate server. That value needs to then be available as a webfocus amper variable (ex. &PORTALVALUE). I have seen examples of how to populate these utilizing session variables and calling the CopySessionVarToWFVar function, however since these two sites are on separate servers and running in separate sessions, this approach does not work. Has anyone else had any sucess in doing something similar?

Thanks,

Leo ;-)