How to Unique Subdomain for each member?

[xiaoyuli]

Hi:
I want to have a unique subdomain for each member profile page. In the address bar, display username.example.com instead of www.example.com/forums/member.php?u=xxxxx

There is an article here talked about that, but seems like it's not working for the version 3.7+.
Here is the link for the article:
https://vborg.vbsupport.ru/showthrea...ight=subdomain

The main difference is, in the article, it redirect http://www.example.com/member.php?username=xxxxxx
to http://username.example.com

While vbulletin version 3.7+ , member profile page address doesn't have username. It only shows the user number.

Is there a way to make it work? I see cghub.com made it, but I don't know how they did it.
http://koroe.cghub.com/

Hope somebody knows.

Thanks