I can pay if i need to buy it but i was it somewhere and now i cant find it again. I have only this picture, also plugins is very cool and nice for players. And sorry if i type in the wrong place but its strange for me after changed oxidemod to umod website ;)
https://imgur.com/EwgxobE

As far as I know, it is a private plugin.

Uep Thanks, i will use Zlevels for now and also found this again form Lone- Post on facepunch forums.