Ammo Purchasing Not working (DAKRP)

[Triage]

Recently I added the Mad Cow ammo typs to my ammotypes.lua. I go in game but when i clikc to by once it just doesn't buy.

Code:

GM:AddAmmoType("ent_mad_ammo_357", "357 Ammo", "models/Items/357ammo.mdl", 30, 10)

GM:AddAmmoType("ent_mad_ammo_shotgun", "Shotgun Ammo", "models/Items/BoxBuckshot.mdl", 35, 20)

GM:AddAmmoType("ent_mad_ammo_45", ".45 Ammo", "models/Items/BoxSRounds.mdl", 20, 15)

GM:AddAmmoType("ent_mad_ammo_50", ".50 Ammo", "models/Items/BoxSRounds.mdl", 20, 15)

GM:AddAmmoType("ent_mad_ammo_46mm", "4.6MM Ammo", "models/Items/BoxSRounds.mdl", 25, 15)

GM:AddAmmoType("ent_mad_ammo_57mm", "5.7MM Ammo", "models/Items/BoxSRounds.mdl", 27, 15)

GM:AddAmmoType("ent_mad_ammo_9mm", "9MM Ammo", "models/Items/BoxSRounds.mdl", 30, 15)

GM:AddAmmoType("ent_mad_ammo_556mm", "5.56MM Ammo", "models/Items/BoxMRounds.mdl", 50, 50)

GM:AddAmmoType("ent_mad_ammo_762mm", "7.62MM Ammo", "models/Items/BoxMRounds.mdl", 80, 40)

I don't understand why it isn't working.