GeoIP NGINX not working?

Question

Nginx

Good evening, tell me what I'm doing wrong in the http block in the config file nginx.conf added

geoip_country /usr/share/GeoIP/GeoIP.dat;
  map $geoip_country_code $allowed_country {
  default yes;
  LV no;
}

Added to the server block of the virtual host

if ($allowed_country = no) {
            return 403;
        }

I figured it out with these, everything works, the task is to open access for certain Latvian IPs so that they only let them in, but not the rest of Latvia, does anyone have any ideas?