What leveling system?
What addon?
What server?
is there exploit to get max level with the leveling system?
What leveling system?
What addon?
What server?
zombiiju (12-06-2016)
this
garrysmods . org/download/40/darkrp-leveling-system-50
To my knowledge, unless it's not checked server side you won't be able to exploit it.
Unless you have experience with lua and can check the addons net.Start functions and try call on them sending back modified info.