How to Disable Global Chat? and Enable Local Chat?

I set server.globalchat to false, and after server.writecfg, server.save and a server restart, did not work.

Should I report this to Facepunch?
Maybe an Oxide plugin is conflicting?
There's an older post where someone also couldnt get server.globalchat to work

References:
Solved - Disabling global chat?
Solved - Local chat only, no global chat?
Disable in-game server chat?

I am currently testing BetterChatMute using the toggleglobalmute functionality
uMod - Better Chat Mute by LaserHydra

But this doesnt suffice, since I want people to still be able to chat with each other locally,
this also hurts players who do not have microphones (but players should still be able to /pm and join clans and use clan ally chat as well)

P.S Id love a plugin that could do local chat but let you set the radius of the range of the chat
Rust - Local chat

OnPlayerChat Hook
Oxide API for Rust

 

server.writecfg does only save users.cfg.

you need to put server.globalchat false in server.cfg and you should be fine.