I made this script that gives you a helmet if a bool value is set to true. But there is a problem?

Ok so I made this script that gives you a helmet if a bool value is set to true. But the problem is even when I set the bool value to false and reset my character it still gives me the sigil helm. I've been trying to find ways to prevent this but I haven't been able to. Here is my code:

function makemotor(parent, p0, p1, c0, c1)
	local wel = Instance.new("Motor6D")
	wel.Part0 = p0
	wel.Part1 = p1
	wel.C0 = c0
	if c1 ~= nil then
		wel.C1 = c1
	end
	wel.Parent = parent
	return wel
end

cf = CFrame.new
ang = CFrame.Angles
rd = math.rad
rd2 = math.random

game.Players.PlayerAdded:Connect(function(plr)
	plr.CharacterAdded:Connect(function(chr)
		chr.Archivable = true
		local human = chr["Humanoid"]
		local head = chr["Head"]
		local human = chr["Humanoid"]
		local torso = chr["Torso"]
		local rightarm = chr["Right Arm"]
		local leftarm = chr["Left Arm"]
		local rightleg = chr["Right Leg"]
		local leftleg = chr["Left Leg"]
	
		local data = plr:WaitForChild("Data")
		local SigilHelm = data:WaitForChild("SigilHelm")
		local Stand = chr:WaitForChild("Stand") -- Waiting for the stand
		

		if SigilHelm.Value == true then
			local helmet = game.ServerStorage.SigilHelm:Clone()
			helmet.Parent = chr
			makemotor(head, head, helmet, ang(rd(0), rd(0), rd(0)) * cf(0, 0.4, 0.2), ang(0, 0, 0))
			chr.Humanoid.MaxHealth = chr.Humanoid.MaxHealth * 1.3
			chr.Humanoid.Health = chr.Humanoid.MaxHealth
			for _, n in pairs(chr:GetChildren()) do
				if n.ClassName == "Accessory" or n.ClassName == "Hat" then
					n:Destroy()
				end
			end
		end
	end)
end)