Varnish cache rule

I need to disable Varnish caching for logged in wordpress users
The rule is for

Code: [Select]

sub vcl_recv {
   

Code: [Select]

if (req.http.cookie ~ "wordpress_logged_in") {
           return (pass);
}

if (req.http.Cache-Control ~ "(no-cache|no-store|private)") {
           return (pass);
}

When I paste it into /etc/varnish/conf.d/vhosts/MYDOMAIN.conf and rebuild the webserver, these rules are lost. Can I paste them somewhere else (template?) where it's not overridden after rebuilding the server?

this info is on cwp wiki
http://wiki.centos-webpanel.com/webservers-vhost-templates

Thank you!