Where's the part where this sword doesn't tie in the script?

I made this script long ago, and I forgot what I edited... Could someone answer me reminding me, real fast where the part making it non tie able is? This is the script;

r = game:service("RunService")
local damage = 5
local slash_damage = 10
local lunge_damage = 20
sword = script.Parent.Handle
Tool = script.Parent
local SlashSound = Instance.new("Sound")
SlashSound.SoundId = "rbxasset://sounds\\swordslash.wav"
SlashSound.Parent = sword
SlashSound.Volume = .2
local LungeSound = Instance.new("Sound")
LungeSound.SoundId = "rbxasset://sounds\\swordlunge.wav"
LungeSound.Parent = sword
LungeSound.Volume = .2
local UnsheathSound = Instance.new("Sound")
UnsheathSound.SoundId = "rbxasset://sounds\\unsheath.wav"
UnsheathSound.Parent = sword
UnsheathSound.Volume = .2
function blow(hit)
if (hit.Parent == nil) then return end
local humanoid = hit.Parent:findFirstChild("Humanoid")
local vCharacter = Tool.Parent
local vPlayer = game.Players:playerFromCharacter(vCharacter)
local hum = vCharacter:findFirstChild("Humanoid")
if humanoid~=nil and humanoid ~= hum and hum ~= nil and hum.Health > 0 then
local right_arm = vCharacter:FindFirstChild("Right Arm")
if (right_arm ~= nil) then
local joint = right_arm:FindFirstChild("RightGrip")
if (joint ~= nil and (joint.Part0 == sword or joint.Part1 == sword)) then
tagHumanoid(humanoid, vPlayer)
humanoid:TakeDamage(damage)
wait(1)
untagHumanoid(humanoid)
end
end
end
end
function tagHumanoid(humanoid, player)
local creator_tag = Instance.new("ObjectValue")
creator_tag.Value = player
creator_tag.Name = "creator"
creator_tag.Parent = humanoid
end
function untagHumanoid(humanoid)
if humanoid ~= nil then
local tag = humanoid:findFirstChild("creator")
if tag ~= nil then
tag.Parent = nil
end
end
end
function attack()
damage = slash_damage
SlashSound:play()
local anim = Instance.new("StringValue")
anim.Name = "toolanim"
anim.Value = "Slash"
anim.Parent = Tool
end
function lunge()
damage = lunge_damage
LungeSound:play()
local anim = Instance.new("StringValue")
anim.Name = "toolanim"
anim.Value = "Lunge"
anim.Parent = Tool
force = Instance.new("BodyVelocity")
force.velocity = Vector3.new(0,10,0)
force.Parent = Tool.Parent.Torso
wait(.25)
swordOut()
wait(.25)
force.Parent = nil
wait(.5)
swordUp()
damage = slash_damage
end
function swordUp()
Tool.GripForward = Vector3.new(-1,0,0)
Tool.GripRight = Vector3.new(0,1,0)
Tool.GripUp = Vector3.new(0,0,1)
end
function swordOut()
Tool.GripForward = Vector3.new(0,0,1)
Tool.GripRight = Vector3.new(0,-1,0)
Tool.GripUp = Vector3.new(-1,0,0)
end
function swordAcross()
-- parry
end
Tool.Enabled = true
local last_attack = 0
function onActivated()
if not Tool.Enabled then
return
end
Tool.Enabled = false
local character = Tool.Parent;
local humanoid = character.Humanoid
if humanoid == nil then
print("Humanoid not found")
return 
end
t = r.Stepped:wait()
if (t - last_attack < .2) then
lunge()
else
attack()
end
last_attack = t
--wait(.5)
Tool.Enabled = true
end
function onEquipped()
UnsheathSound:play()
end
script.Parent.Activated:connect(onActivated)
script.Parent.Equipped:connect(onEquipped)
connection = sword.Touched:connect(blow)