Save and load Money system?

Hello,

I wanna make an money system.
But it needs to add like 10$ when you kill an npc

Can some one help me with it?

Thanks

Add me on steam : [TG]Pvt.Elqauto[Nug]

First off, study NWInts. Heres a wiki link:

Getting NWInts - http://wiki.garrysmod.com/?title=Entity.GetNWInt
Setting NWInts - http://wiki.garrysmod.com/?title=Entity.SetNWInt

and for $10 for each NPC kill, you could do a hook for: