[Pound Mailing List] xHTTP 1 for service

Hi,

I would like to do this

    Service
        HeadRequire "Host: www.tld.com"
        xHTTP 1

        BackEnd
            Address 192.168.0.3
            Port    80
        End
    End

but it doesn't work

Is there a way to do this, or override the listenHTTP by service ?

-- 
IbaSaW