Christopher Jazinski:
I am interested in dynamically changing the session timeout value for the logged in user based on some criteria
As session handling is typically a function of your appserver/servlet container, it depends on which one you're using. I'm not aware of any that allows access to this setting easily and dynamically. But that's largely a function of never having looked for this feature.
What you could always do is to set the session to be short and run some javascript code that automatically extends the session until your desired session time is reached. This would be largely similar to what Liferay does anyway (but unlimited) if you set session.timeout.auto.extend=true in portal-ext.properties. Of course, this feature would break on a closed browser window, as no javascript would be running then, but this might be desired behaviour.
