Thanks a lot .
If I'm to write a class to reset session value to null, is it possible to write a generic class which will accept "Session name" as a parameter, so i can pass it form "Custom Action" interface when selecting "Custom" from "Type"?
because for now i only see a place where i can select a class, bt dont see if i can pass any parameters to this class ( screenshot attached. I used already exisiting class created for some other purpose as example).
Also, you dont think there is any other way to reset the session, maybe some javascript in Masterpage or something less complex to create and deploy?