local Enabled = true
local part = script.Parent
local spotlight = game.Lighting.GlobalShadows

script.Parent.ClickDetector.MouseClick:connect(function()
    Enabled = not Enabled
	spotlight.Enabled = Enabled
end)

output message reads: 21:38:58.529 - Workspace.Part.Script:7: attempt to index upvalue 'spotlight' (a boolean value)

i have no clue how to fix that