Help with "persist source_addr" command not working in Irule

Do you know if I could update the persistence table directly with "persist add" right after the POOL xxx MEMBER xxx statement? If so, could you post an example of the command?

e.g.

 config

root@(ve11a)(cfg-sync In Sync)(Active)(/Common)(tmos) list ltm virtual bar
ltm virtual bar {
    destination 172.28.24.10:80
    ip-protocol tcp
    mask 255.255.255.255
    persist {
        source_addr {
            default yes
        }
    }
    pool foo
    profiles {
        http { }
        tcp { }
    }
    rules {
        qux
    }
    source 0.0.0.0/0
    source-address-translation {
        type automap
    }
    vs-index 12
}
root@(ve11a)(cfg-sync In Sync)(Active)(/Common)(tmos) list ltm pool foo
ltm pool foo {
    members {
        200.200.200.101:80 {
            address 200.200.200.101
        }
    }
}
root@(ve11a)(cfg-sync In Sync)(Active)(/Common)(tmos) list ltm rule qux
ltm rule qux {
    when HTTP_REQUEST {
  pool foo member 200.200.200.101
}
when HTTP_RESPONSE {
  persist add source_addr [IP::client_addr]
}
}

 test

root@(ve11a)(cfg-sync In Sync)(Active)(/Common)(tmos) show ltm persistence persist-records all-properties
Sys::Persistent Connections
source-address - 172.28.24.10:80 - 200.200.200.101:80
-----------------------------------------------------
  TMM           0
  Mode          source-address
  Value         172.28.24.1
  Age (sec.)    3
  Virtual Name  /Common/bar
  Virtual Addr  172.28.24.10:80
  Node Addr     200.200.200.101:80
  Pool Name     /Common/foo
  Client Addr   172.28.24.1
  Owner entry

Total records returned: 1