DDNS setup for cloudflare

[ce13]

Hi, I just moved my DNS from namecheap to cloudflare, but I have issue to setup DDNS on PfSense.

For namecheap, I used to have below setup:
NET Namecheap @.domain.com x.x.x.x
NET Namecheap mail.domain.com x.x.x.x
NET Namecheap *.domain.com x.x.x.x

For cloudflare,
NET Cloudflare mail.domain.com x.x.x.x
NET Cloudflare @.domain.com x.x.x.x

I am trying to set the same for cloudflare but not able to create wildcard *.domain.com, it says invalid hostname. Is there anyone know how to setup * as hostname for cloudflare?