OPNsense + Captive Portal + FreeRadius reply message

[mindf]

I've been testing OPNsense radius accounting by following this document,

https://docs.opnsense.org/manual/how-tos/accounting.html

I am able to authenticate user through the captive portal but there is no 'reply-message' being shown on the user side after successfully logged in.

From the code there is a reply-message per below

Reply-Message = "Hello, %{User-Name}"

Any input or guidance on this? I am planning to customize the Reply-Message and will show some information after user successfully log in through the captive portal.

Thanks!