[Zope] SiteRoot and URL1 cause different namespace error

Greetings, I'm having a problem resolving URL's running in ZServer mode with a SiteRoot. Some background: httpd.conf contains: ProxyPass / http://localhost:8080/ ProxyPassReverse / http://localhost:8080/ ProxyVia on The SiteRoot is: base = https://my.server.com path = / If I create the following DTML method, I get a "Different Namespace" error: URL is: <dtml-var URL1> <p> Content is: <dtml-var "REQUEST.resolve_url(URL1)"> In testing, I have found that I can fix this error by changing the last line to: Content is: <dtml-var "REQUEST.resolve_url('http://' + REQUEST.HTTP_HOST + URLPATH1)"> This isn't a very elegant solution, though. How can I get Zope to properly resolve the URL1 variable? Thanks, Steve