Change server : Cloudflare to my SaaS name

Hi, we are using cloudflare as backend for our SaaS platform.
However Cloudflare is returning Server: cloudflare in response from worker. it’s crucial for our SaaS that we have our SaaS name as server.

How can we do it?
Looking forward a solution ~

You don’t.

In the rules it says, exceptions can be made, so looking for a solution, not what we already know.