Dynament variable for host name

[Walter]

Hello all,

I working in a Delivery Server project that's recently been updated to 11.0.  There's some XML scripts with lines of code that look something like this:

<rde-dm:constraint>

            [#request:rde-rd:httpHeader-host#] EQ "m.mysite.com"

</rde-dm:constraint>

<rde-dm:if>

     <![CDATA[

            <!-- HTML goes here...  

     ]]>

</rde-dm:if>

</rde-dm:attribute>

It checks a value called rde-rd:httpHeader-host, and then adds some HTML if the host name matches.  This code works in 10.1, but I can't get it to work in 11.0.  There's no mention of it in the manual that I see... Perhaps it's undocumented, and support has been removed?  If so, is there another way to grab the host name?

Thanks,

Walter