Ammo shipments problem

How do i make ammo shipments?i have the ammo type already, but when i created the shipment and go in game i just cant pick it up.

AddCustomShipment(“Pulse Ammo”, “models/Items/BoxMRounds.mdl”, “M9K Rifle ammo”, 1000, 10, false, 0, false, {TEAM_BMD, TEAM_GUN})

ammo type–

DarkRP.createAmmoType(“ar2”, {
name = “M9K Rifle ammo”,
model = “models/Items/BoxMRounds.mdl”,
price = 60,
amountGiven = 30,
allowed = {TEAM_GUN}
})

-snip-

??

???