301 Redirect Rule Not Working

I’ve setup a redirect rule and enabled it in the Cloudflare dashboard.
It redirects https://example.com, to https://www.example.com.
However, I can see that it isn’t working.

How do I resolve this issue?

Screenshots of the aforementioned below:

You’re trying to match the Hostname field, but the value you’ve provided is not a hostname – so it’ll never match anything. Look at the example under the value field to see the expected format.

Thanks for the prompt response, I’ve updated the rule.

Is the value in the Expression field correct (prefixed with https://)?

Here is the current configuration: