ACCESS::session exists not working

when HTTP_REQUEST {
                Check to see if the session exists in the LastMRH_Session cookie
                This cookie contains the actual access session ID
                if { [HTTP::cookie exists LastMRH_Session] } {
                                log local0. "Session ID is [HTTP::cookie value LastMRH_Session]"
                                set mySessionID [HTTP::cookie value LastMRH_Session]
                                set TableEntry "[table lookup -subtable "AccessTable" $mySessionID]"
                                log local0. "For sessionID $mySessionID the entry was $TableEntry"

                                if { $TableEntry ne "" } {
                                            HTTP::cookie insert name saved_uri value "$TableEntry"
                                           HTTP::uri $TableEntry
                                }
                } else {
                                log local0. "No cookie called LastMRH_Session yet."
                }

}

when ACCESS_POLICY_AGENT_EVENT {
       if { [ACCESS::policy agent_id] eq "login_success" } {
                                                set mySessionID [ACCESS::session data get session.user.sessionid]
                                                set myURI [ACCESS::session data get session.server.landinguri]

                                                add an entry to the table
                                                table add -subtable "AccessTable" $mySessionID $myURI 300 300
                                                log local0. "Session ID: $mySessionID"
                                }
}