Why doesn't the UI change/start a meltdown when it reaches over or under temperatures?

tested it many times, only "UNSTABLE" works WHAT IS WRONG WITH THE SCRIPT

while true do
	wait(0.1)
	if game.ServerStorage.Temperature.Value <= 250 then
		script.Parent.Reader.TextColor3 = Color3.new(0.0431373, 1, 0.0431373)
		script.Parent.Reader.Text = "STABLE"
	elseif game.ServerStorage.Temperature.Value <= -250 then
		script.Parent.Reader.TextColor3 = Color3.new(0.0588235, 0.435294, 1)
		script.Parent.Reader.Text = "COLD"
	elseif game.ServerStorage.Temperature.Value >= 250 then
		script.Parent.Reader.TextColor3 = Color3.new(1, 0.972549, 0.12549)
		script.Parent.Reader.Text = "UNSTABLE"
	elseif game.ServerStorage.Temperature.Value >= 1200 then
		script.Parent.Reader.TextColor3 = Color3.new(1, 0.427451, 0.0941176)
		script.Parent.Reader.Text = "WARNING: OVERHEATING"
	elseif game.ServerStorage.Temperature.Value >= 2000 then
		script.Parent.Reader.TextColor3 = Color3.new(1, 0, 0)
		script.Parent.Reader.Text = "DANGER: NEAR MELTDOWN"
	elseif game.ServerStorage.Temperature.Value <= -1200 then
		script.Parent.Reader.TextColor3 = Color3.new(0.168627, 0.0235294, 1)
		script.Parent.Reader.Text = "FREZEING"
	elseif game.ServerStorage.Temperature.Value >= 2400 then --meltdown
		game.ServerStorage.Temperature.Value = game.ServerStorage.Temperature.Value + 325812435
		script.Parent.Reader.TextColor3 = Color3.new(0.32549, 0.0470588, 0.666667)
		script.Parent.Reader.Text = "MELTDOWN"
		print("Meltdown Initated")
		local Text = game.StarterGui.t.system
		local Note = game.StarterGui.t.Note

		Text.Visible = false

		wait(3)
		Text.Visible = true
		Text.Event.Text = "MELTDOWN"
		Text.InfText.Text = "Warning, core tempetures are significantly high. Please prepare for a meltdown."

		script.MeltdownIntroAnnouncement:Play()
		wait(9)
		Text.Visible = false
		script.CoreOverheatingSound:Play()
		workspace.Core.Main.Emitter.Enabled = true
		wait(3)

		script.Alarm:Play()
		script.Lights:Destroy()
		script.PowerFailureSound:Play()
		script.Supports.q.Anchored = false
		script.Supports.w.Anchored = false
		script.Supports.e.Anchored = false
		script.Supports.r.Anchored = false
		script.Supports.t.Anchored = false
		script.Supports.y.Anchored = false
		script.Supports.u.Anchored = false
		script.Supports.i.Anchored = false
		script.Supports.breakSound:Play()
		script.ExplosionFile1:Play()
		wait(8)
		script.bridge.fallsound:Play()
		script.bridge.floor.Anchored = false
		script.bridge.glass.Anchored = false
		script.Decetor.p1.Anchored = false
		script.Decetor.p2.Anchored = false
		script.Decetor.p3.Anchored = false

		wait(100)
		Text.Visible = true
		Text.Event.Text = "Shutdown"
		Text.InfText.Text = "Attention staff, the choice to shutdown the core will expire in 5 minutes."
		Text.InfText.Text = "This core will explode in 7 minutes."
		Text.Visible = false
		script.song:Play()
		wait(300)
		script.Self_Destruct:Play()
		Text.Visible = true
		Text.InfText.Text = "Shutdown has expired, Evacuate NOW!"
		wait(9.3)
		script.Self_Destruct:Pause()
		Text.Visible = false
		wait(120)
		local ColorCorrection = game.ReplicatedStorage.ColorCorrection:Clone()
		ColorCorrection.Parent = game.Lighting
		
		local Blur = game.ReplicatedStorage.Blur:Clone()
		Blur.Parent = game.Lighting
		
		script.CoreExplosion:Play()
		script.RoaringNuke:Play()
		script.Nuke.Transparency = "0"
		print("Core exploded")
		
		--nuke
		local tweenservice = game:GetService("TweenService")

		local part = script.Nuke

		local target = Vector3.new(1100.2, 1100.2, 1100.2)
		
		part.Size = Vector3.new(30, 30, 30)
		
		local tweenInfo = TweenInfo.new(
			20, -- Time the tween takes
			Enum.EasingStyle.Linear, -- EasingStyle
			Enum.EasingDirection.In, -- EasingDirection
			0, -- How many times you want it to repeat
			false, -- Reverse
			0.1 -- Delay
		)

		local tween = tweenservice:Create(part, tweenInfo, {Size = target})

		tween:Play()
		wait(30)
		for i, v in pairs(game.Players:GetChildren()) do
			if v then
				v:Kick("Meltdown has caused the facility to be unstablized. Thank you for playing.")
			end
		end
	end
	wait(1)
end