Redirect /webmail to another subdomain

Hi all, Could you please tell me how I can redirect mydomain.co.uk/webmail to mail.mydomain.co.uk/webmail The first domain is on one server and the subdomain is on another server with a different IP. I have tried to use the Redirect in cPanel: Domain Directory Regular Expression Redirect URL HTTP Status Code Type Match www. Wildcard Actions mydomain.co.uk /webmail https://mail.mydomain.co.uk/webmail 301 permanent
but I get this (photo below) and for the both options, it goes again to mydomain.co.uk/webmail -03-18 at 11.43.39.png">71289