I'm sorry, but I don't understand what you mean.
Are you referring to the shortcode parameters?
If so, in the actual shortcode you cannot reference a location, you can only reference a product ID. That's why we suggested creating a new one with a bit of coding to be able to show the info from multiple locations.
If you are a developer, I'm sure you can do that easily, if not, you'd have to find one to enhance that shortcode for you.