? Transparency is not a valid member of BoolValue "Workspace.Construction ?

I want all my lights to turn on and off if Switch = true Error I get Transparency is not a valid member of BoolValue "Workspace.Construction lights.Light Arrow.Switch"

game.ReplicatedStorage["Light Settings"]["Left Lights"].OnServerEvent:Connect(function()
    local Switch = script.Parent["Light Arrow"].Switch
        while true do
        wait(1)
        while Switch.Value == true do
                local ConLights = script.Parent["Light Arrow"]
                for _, ConLights in ipairs(ConLights:GetChildren()) do
            ConLights.Transparency = 0
            wait(1)
            ConLights.Transparency = 1

            end
            end
        end
end)

Updated script

game.ReplicatedStorage["Light Settings"]["Left Lights"].OnServerEvent:Connect(function()

    local Switch = script.Parent.Switch
    local ConLights = script.Parent["Light Arrow"]:WaitForChild(script.Parent["Light Arrow"].LPart, 12)
    while Switch.Value == true do
        task.wait()
        for _, ConLights in ipairs(script.Parent["Light Arrow"]:GetChildren()) do 
            ConLights.Transparency = 0
            wait(1)
            ConLights.Transparency = 1

            end
        end
end)

If you need a screenshot of what the explorer looks like let me know.