Problems with cloudflare api

I am trying to filter by country but result is always the same:

https://api.cloudflare.com/client/v4/zones/api-key/firewall/events?country=UA
https://api.cloudflare.com/client/v4/zones/api-key/firewall/events?limit=10
https://api.cloudflare.com/client/v4/zones/api-key/firewall/events?action=challenge

And multiple other combinations…

A post was merged into an existing topic: Problem with FirewallEvents API