Debugging Flow Messages through MBLB

I'm working on a irule and using MBLB, but its impossible use some commands on events, like TCP::local_port on SERVER_DATA. Some commands works well when IRemove the MBLB, but I need to use it.

doesn't TCP::local_port in SERVER_DATA work?

this is mine.

root@(ve11a)(cfg-sync Changes Pending)(Active)(/Common)(tmos) list ltm virtual bar
ltm virtual bar {
    destination 172.28.20.111:7
    ip-protocol tcp
    mask 255.255.255.255
    pool foo
    profiles {
        mblb { }
        tcp { }
    }
    rules {
        myrule
    }
    source 0.0.0.0/0
    source-address-translation {
        type automap
    }
    vs-index 23
}
root@(ve11a)(cfg-sync Changes Pending)(Active)(/Common)(tmos) list ltm pool foo
ltm pool foo {
    members {
        200.200.200.101:7 {
            address 200.200.200.101
        }
        200.200.200.111:7 {
            address 200.200.200.111
        }
    }
}
root@(ve11a)(cfg-sync Changes Pending)(Active)(/Common)(tmos) list ltm rule myrule
ltm rule myrule {
    when CLIENT_ACCEPTED {
  TCP::collect
}
when CLIENT_DATA {
  log local0. "[IP::remote_addr][TCP::remote_port] > [IP::local_addr]:[TCP::local_port] payload=[TCP::payload]"
  TCP::release
  TCP::notify request
  TCP::collect
}
when SERVER_CONNECTED {
  TCP::collect
}
when SERVER_DATA {
  log local0. "[IP::local_addr]:[TCP::local_port] > [IP::remote_addr]:[TCP::remote_port] payload=[TCP::payload]"
  TCP::release
  TCP::notify response
  TCP::collect
}

[root@ve11a:Active:Changes Pending] config  tail -f /var/log/ltm
Aug 31 13:40:33 ve11a info tmm[1027]: Rule /Common/myrule : 172.28.20.1759863 > 172.28.20.111:7 payload=1
Aug 31 13:40:33 ve11a info tmm[1027]: Rule /Common/myrule : 200.200.200.14:59863 > 200.200.200.111:7 payload=1
Aug 31 13:40:34 ve11a info tmm[1027]: Rule /Common/myrule : 172.28.20.1759863 > 172.28.20.111:7 payload=2
Aug 31 13:40:34 ve11a info tmm[1027]: Rule /Common/myrule : 200.200.200.14:59863 > 200.200.200.101:7 payload=2
Aug 31 13:40:35 ve11a info tmm[1027]: Rule /Common/myrule : 172.28.20.1759863 > 172.28.20.111:7 payload=3
Aug 31 13:40:35 ve11a info tmm[1027]: Rule /Common/myrule : 200.200.200.14:59863 > 200.200.200.111:7 payload=3
Aug 31 13:40:36 ve11a info tmm[1027]: Rule /Common/myrule : 172.28.20.1759863 > 172.28.20.111:7 payload=4
Aug 31 13:40:36 ve11a info tmm[1027]: Rule /Common/myrule : 200.200.200.14:59863 > 200.200.200.101:7 payload=4