How do I actually apply the custom page to a WAF rule?

Hello,

I’ve set up a WAF rule that blocks visitors from certain countries. I checked that it works perfectly, but currently it shows a default CF message/page.

I set up a custom page as per instruction on CF knowledge base and added this page to " IP/Country Block" and “WAF block” in the “Custom pages” section.

However, I can’t figure out how do I actually make the page showing when the event (visit from a blocked country) triggers? The “take action” option only shows me the default WAF page and custom HTML/XML etc. for which I have to provide some text. But haven’t I already created a custom page which should trigger now for this event?

Can someone enlighten me on how do I make CF show my custom page for the WAF rules?

Thank you.