Parrying isn't negating all forms of damage

Help and Feedback Scripting Support
,
1

Hello there!

I’ve created an ability to allow the player to parry for my swords, the issue is that the player is still damaged even if they parry it albeit delayed.

local Swords = script.Parent
local ATKAnim = Swords:WaitForChild("ATKAnim")
--Folders
local AnimFolders = {
	SA = ATKAnim.SwordAnims
}
--//Services
local UIS = game:GetService("UserInputService")
--//Plr
local Player = game.Players.LocalPlayer
local Character = Player.Character or Player.CharacterAdded:Wait()
local Humanoid = Character:WaitForChild("Humanoid")
--//Variables
local OnEquip = false
local ParryDB = false
local CanParry = false
--//Func
Swords.Equipped:Connect(function()
	OnEquip = true
	Humanoid.WalkSpeed = 25
	
	local SwordIdle = Humanoid.Animator:LoadAnimation(AnimFolders.SA.SwordIdle)
	SwordIdle:Play()
	
	Swords.Unequipped:Connect(function()
		OnEquip = false
		Humanoid.WalkSpeed = 16
		SwordIdle:Stop()
	end)
end)

UIS.InputBegan:Connect(function(i, gp)
	if i.KeyCode == Enum.KeyCode.Q and OnEquip and not ParryDB then
		ParryDB = true
		CanParry = true
		local OldHealth = Humanoid.Health
		
		local TryParryAnim = Humanoid.Animator:LoadAnimation(AnimFolders.SA.TryParry)
		TryParryAnim:Play()
		
		delay(0.5,function()
			TryParryAnim:Stop()
			ParryDB = false
			CanParry = false
		end)
		
		Humanoid:GetPropertyChangedSignal("Health"):Connect(function()
			if Humanoid.Health <= OldHealth and CanParry == true then
				CanParry = false
				
				TryParryAnim:Stop()
				local ParryAnim = Humanoid.Animator:LoadAnimation(AnimFolders.SA.SuccessfulParry)
				ParryAnim:Play()
				Humanoid.Health = OldHealth
			end
		end)
	end
end)
2 
if not parrying then
    humanoid:TakeDamage(1947294829473974939483)
end

you can do something like this to prevent getting damage while parrying