how to limit weapon in one slot ?

[aoa3005]

it my code did't work :(
when player get weapon class weapon_ak47 i want to make player can't get other weapon in css_weapon

local css_weapon = {
	"weapon_ak47",
	"weapon_aug",
	"weapon_awp",
	"weapon_deagle",
	"weapon_dual",
	"weapon_g3",
	"weapon_galil",
	"weapon_m4a1",
	"weapon_mac10",
	"weapon_mp5",
	"weapon_scout",
	"weapon_ump",
	"weapon_p90",
	"weapon_mp7",
	"weapon_sg550",
	"weapon_sg552",
	"weapon_tmp"
};

local css_weapon_2 = {
	"weapon_deagle",
	"weapon_dual",
	"weapon_glock",
	"weapon_deagle",
	"weapon_dual",
	"weapon_p228"
};

function JB:PlayerCanPickupWeapon( p, wep )
	if p:HasWeapon(wep:GetClass()) then return false end
	if p:HasWeapon(wep:GetClass(css_weapon)) or p:HasWeapon(wep:GetClass(css_weapon_2)) then
		return false
	end
	return true
end

pls help me :<

sorry for my bad english :(