MBLB connection Question, Please Help!

when CLIENT_ACCEPTED
{
   LB::context_id "all_clients"
    TCP::collect
}

when CLIENT_DATA {
   if { [TCP::payload length] >= 4 }
   {
     binary scan [TCP::payload] H* iso_msg
       set msg_len [expr 0x[string range $iso_msg 0 3]]
        set msg_len [expr {$msg_len + 2}]

       if { [TCP::payload length] >= $msg_len }
        {
           TCP::release $msg_len
           TCP::notify request
     }
   }
   TCP::collect
}

when SERVER_CONNECTED
{
     TCP::collect
}

when SERVER_DATA
{
    TCP::release
    TCP::notify response
    TCP::collect
}