Cloudfare Tunnel Secific Port Access Error

Im running Windows 11 machine as server and installed Cloudflare tunnel and accessing my server. i try to access one port (7990) in which Trigone remote system monitor running. I cant access this server with cloudflare tunnel.

From above when i try to access it via my public ip it points correctly to 7990, but when i try to access it with my subdomain it points to 50337 even though i point my subdomain to access 192.168.1.2:7990.

Any help
RM