UDP Payload replace destination IP with iRules

but the command node and the command translate don't provide me the Destination IP Address translation that i want to implement

this is mine.

 config

root@(ve11a)(cfg-sync In Sync)(Active)(/Common)(tmos) list ltm virtual udpfwd
ltm virtual udpfwd {
    destination any:0
    ip-protocol udp
    mask any
    profiles {
        fastL4 { }
    }
    rules {
        qux
    }
    source 0.0.0.0/0
    translate-address disabled
    translate-port disabled
    vs-index 54
}
root@(ve11a)(cfg-sync In Sync)(Active)(/Common)(tmos) list ltm rule qux
ltm rule qux {
    when CLIENT_ACCEPTED {
  translate address enable
  node 1.1.1.1
}
}

 trace

[root@ve11a:Active:In Sync] config  tcpdump -nni 0.0 -s0 udp port 1234
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on 0.0, link-type EN10MB (Ethernet), capture size 65535 bytes
08:19:44.971945 IP 200.200.200.101.32846 > 100.100.100.1.1234: UDP, length 5 in slot1/tmm0 lis=
08:19:44.972019 IP 200.200.200.101.32846 > 1.1.1.1.1234: UDP, length 5 out slot1/tmm0 lis=/Common/udpfwd