Whitelist Application Control

Hello,

Our user need access to 3rd party application via VPN, they use Sophos VPN for VPN client.

This traffic is blocked by fortinet because of the application control, then i make 'application and filter overrides' for OpenVPN and the user is able to connect to the VPN now.

With this condition the user can access to any OpenVPN address. Now can we restrict to only allowing use OpenVPN if the destination set to 'vpn.mycomain.com' and block the rest?