code: function(key, value, delay){
              $ExpressSESSION.session.store[key] = value;
              if(delay && is_number(delay) && delay > 0){
                  var vkey = self.id()+'_'+key;
                  if($ExpressSESSION.session.expires[key]) clearTimeout(sesssion_expires[vkey]);
                  sesssion_expires[vkey] = setTimeout(function(){
                      self.forget(key);
                      delete sesssion_expires[vkey];
                      delete $ExpressSESSION.session.expires[key];
                  }, delay);
              }
          }
docs: /Storing An Item In The Session