Http traffic on a diffrent port - hostregex

i am trying to setup http traffic with port number i.e i want to send traffic on http://<ip/host>:15000 port to an application hosted on k3s for backward compatiblity reason.

i did configure entrypoint in deployment. But i am unable to setup ingressroute. i am trying to match the route with HostRegexp(*:15000) but its not working.

Any suggestions to achive this?