NW6 SP2 NBM 3.7 SP1

I don't seem to be able to exclude a site from being cached by the FTP


I asked this question before and it was suggested to me that the
non-cacheble url setting is not working for FTP.

I am confused, what is the Non cacheble input screen about ?
It has entries for HTTP HTTPS FTP and even Gopher.
See attached screenshot.

Anybody using this feature ?

Thanks again.