Script dosent unwield torso even after death despite no errors in output?

So this code creates a wield between the player a part, however thought when you die the wield is supposed to be destoryed, but it isnt. No errors in output.

ALSO, when the script is destroyed in workspace and cloned back in workspace, the script dosent seem to create a wield anymore. Please help!

CODE:

local SIREN = game.Workspace.SirenHeadBot
SIREN.SirenHeadAI.Disabled = true
SIREN.Animate.Disabled = true

print("Teleport")
game.Players.PlayerAdded:Connect(function(Player)
Player.CharacterAdded:Connect(function(Char)
local Part = Char:WaitForChild("HumanoidRootPart") 
local Weld = Instance.new("Weld", Char)
Part.Position = Vector3.new(game.Workspace.Knife.Position)
script.Parent.Knife.CFrame = Part.CFrame
Weld.Part0 = game.Workspace.Knife
Weld.Part1 = Part
Weld.C0 = Part.CFrame:inverse()
Weld.C1 = game.Workspace.Knife.CFrame:inverse()

end)
end)


game.Players.PlayerAdded:Connect(function(plr)
	
    plr.CharacterAdded:wait()
    plr.Character.Humanoid.HealthChanged:Connect(function()
        if plr.Character.Humanoid.Health <= 0
        then
            print("ded")
            SIREN.SirenHeadAI.Disabled = false
			SIREN.Animate.Disabled = false
			Weld:Destroy()
			
			
    end
end)
end)