The punch dont stop taking life when he's supposed to stop anyone help?

I did the animation and everything but every time I press the key with which it is hit, once I press the key with which I press it does not stop taking life, please help

here is the server scrpt :

local Punch = game.ReplicatedStorage local Aniamtion = game.ReplicatedStorage.PunchFolder.Animation

local PDB = false

game.Players.PlayerAdded:Connect(function(player) player.CharacterAdded:Connect(function(char) Punch.Punch.OnServerEvent:Connect(function(Player, Action) print("FIRED")

		local humanoid = char:WaitForChild("Humanoid")
		
		char["Left Arm"].Touched:Connect(function(hit)
			if hit.Parent:FindFirstChild("Humanoid") then
				
				hit.Parent.Humanoid:TakeDamage(1)
				wait(1)
				hit.Parent.Humanoid:TakeDamage(0)
			end
		end)		
	end)
end)

end)

local script in the startercharacterscripts

local USI = game:GetService("UserInputService") local player = game.Players.LocalPlayer local char = player.Character local Hum = char:WaitForChild("Humanoid") local dash = game.ReplicatedStorage:WaitForChild("Union"):Clone() local db = false local anim = game.ReplicatedStorage.PunchFolder.Animation

USI.InputBegan:Connect(function(io,p) if io.KeyCode == Enum.KeyCode.R then if db == false then db = true game.ReplicatedStorage.Punch:FireServer() Hum:LoadAnimation(anim):Play() wait(1.2) db = true

	end
end	

end)

When the left arm touches someone, it will damage them. You never made a way to have it only take damage after pressing R. You would need to do it like:

local USI = game:GetService("UserInputService")
local player = game.Players.LocalPlayer 
local char = player.Character
local Hum = char:WaitForChild("Humanoid")
----------------------------------------------------------------
USI.InputBegan:Connect(function(io,p) if io.KeyCode == Enum.KeyCode.R
 local humanoid = char:WaitForChild("Humanoid")

        char["Left Arm"].Touched:Connect(function(hit)
            if hit.Parent:FindFirstChild("Humanoid") then

                hit.Parent.Humanoid:TakeDamage(20)
            end
        end)        
    end)
end)

Along with animations and whatnot. Also, "then if" is supposed to be "and if". Hope that helps.