Session Cookie ASP.Net

<%@ Page Language="vb" %>

   
      
         Sub Page_Load()
           Application.RemoveAll()
         Application.Set("TotallyNewVariable","Test!")
         Message.Text = "First: " + Application("TotallyNewVariable") + "
"
         Application.Set("TotallyNewVariable","Test again!")
         Message.Text = Message.Text & "First after Set: " + _ 
       Application("TotallyNewVariable") + "
"
         End Sub