Trying to set a variable on content of SOAP envelope

Thank you very much for the feedback. This application is hit pretty heavy so I was afraid what they wanted would be very impactful to performance. I need to talk to my app developers to see if they would consider only allowing one session per username. If so, and if not just for my curiosity, how would this be done? I am not sure of the built in commands your speaking of that would work for interacting with cookies or other headers. Thanks again.