Butotns to navigate on FTP/sFTP site

I'm trying to make buttons to navigate in FTP/sFTP sites.
Eg. I want a button to go to /var/www on the current site and optionally set folder tree root to /var/www.
Go /var/www doesn't work.

I think this will work, from a quick test:

Go {sourcepath||noterm}//var/www

Note there are two slashes before "var" and both are required.

Thanks, this is what I've been looking for.