Not sure if my weapon is not initializing or not working at all, SWEP

[hero3112]

if SERVER then
	AddCSLuaFile(  "weapon_ttt_duality.lua")
end

if CLIENT then
	SWEP.PrintName("duality")
	SWEP.Slot(7)
	print("totally working man")
end

//SWEP.Base = "weapon_tttbase"
SWEP.HoldType = "normal"  -- change to medkit
SWEP.ViewModel             = "models/weapons/v_crowbar.mdl"
SWEP.WorldModel            = "models/weapons/w_slam.mdl"
SWEP.Spawnable 			   = true

SWEP.Primary.Recoil      = 0
SWEP.Primary.Automatic   = false
SWEP.Primary.Damage      = 0
SWEP.Primary.Ammo        = "GaussEnergy"
SWEP.Primary.ClipSize    = 1
SWEP.Primary.ClipMax     = 1
SWEP.Primary.DefaultClip = 1

SWEP.AllowDrop = false
SWEP.NoSights = true
//SWEP.Kind("WEAPON_EQUIP2")
SWEP.AutoSpawnable = false
SWEP.Category = "Category"
//SWEP.CanBuy{ROLE_TRAITOR}
//SWEP.LimitedStock = true

--[[SWEP.EquipMenuData = {
   type = "Weapon",
   desc = "The Duality Syringe on primary attack gives you 150% damage but 150% increase in damage taken, on secondary attack gives you 150% health but you do 50% less damage, and reload clears your effects and puts it back into the syringe."
};]]


-- Decreases damage resistance, increases speed, increases damage
function SWEP:PrimaryAttack()
	if (!self:CanPrimaryAttack()) then return end
	self:changePlayerStats(1.5, 1.5, 1.5)
	//self.Weapon:EmitSound("placeholder") --insert yelling noise here
	self:TakePrimaryAmmo(1)
end

-- Increases resistance, lowers speed and damage
function SWEP:SecondaryAttack()
	if (!self:CanSecondaryAttack()) then return end
	self:changePlayerStats(-.5, .5, .75)
	//self.Weapon:EmitSound("placeholder") -- insert ahhh noise here
	self:TakePrimaryAmmo(1)
end

--Resets Effects
function SWEP:Reload()
	self:changePlayerStats(1, 0, 1)
	//self.Weapon:EmitSound("placeholder") -- insert suction noise here
	self:TakePrimaryAmmo(-1)
end

--Begin the hell that is making the cahnges to the player

local PlyDmgScale = 1
local PlyDmgDoneScale = 0
local PlySpdScale = 1
local ply = self.Owner

function GM:EntityTakeDamge(target, dmginfo)
	if(target:IsPlayer()) then
		dmginfo:ScaleDamage(PlyDmgScale)
	end
end

--Catches when a player takes damage to check how much they should take in response to the scale of the weapon mode
function GM:PlayerHurt(victim, attacker, healthRemaining, damageTaken)
	if attacker == ply then 
		victim:Health() = healthRemaining - (damageTaken * PlyDmgDoneScale)
	end
end

--Changes the DMG the player does, the ammount they take, and their walk/crouch speed
function SWEP:changePlayerStats(DMGScale, DMGDoneScale, WalkSpeed)
	PlyDmgScale = DMGScale
	GM:SetPlayerSpeed(ply, WalkSpeed, WalkSpeed - .25)
	PlyDmgDoneScale = DMGDoneScale
end

Any other suggestions would be appreciated

As well as I'm not sure why it wouldn't be working, according to the wiki it should be working

[SirFrancisB]

SWEP.PrintName and SWEP.Slot are variables, not functions. You have made this mistake in other points in your code as well. Just make sure you have an equals sign between the variable name and the value. Also, this saves the PlyDmgScale, PlyDmgDkneScale, and PlySpdScale as global variables, instead of per player or per entity instance