generate URL of my Domain vice Host location

I want to be able to post a link, or send someone a link to a file on my domain.

When I generate a http URL I get the location of the file in my host domain's file structure.

How can I get the location of the file reflecting the location under my domain's file structure?

Right now I get:

HTTP://[Host Domain]/www/[My Subdomain]/[My File Folder]/[My File]

I'm looking for:

HTTP://[My Subdomain].[My Domain]/[My File Folder]/[My File]

Configure the "Generate HTTP URL Extension" as:
Web root path: /[My Subdomain]
Web server hostname override: [My Subdomain].[My Domain]
https://winscp.net/eng/docs/extension_generate_http_url#options

Thanks!