WireGuard config behind Nginx reverse proxy

[UdoChudo]

i'm setup my panel to works behind my Nginx servers on location domain.name/panel/
In panel i setup SSL certs, locations,ports and what ever and all work. But when i generate WireGuard config i got wrong Endpoint adress to connect.
My panel host and nginx host are two diffirent servers and i don't want install Nginx on Panel host
Example
My Nginx: domain.name/panel/
Panel: aa.bb.com:54321

What i want
Address: aa.bb.com
Port: 31964

What i got
Address: domain.name
Port: 31964

In all Inbounds i can setup Listen IP but when i do that, i can't configure more flexible Endpoints because it's fixed to IP not hostname
Is it possible to configure using hostname instead IP in WG connection additionaly ?

Upd. Additional question, is it possible to generate WG config through api ?