Script can't access anything in ServerStorage???

My LocalScript in StarterGui errors "Stormy_Sky is not a valid member of ServerStorage" when it is. LocalScript:

local Status = game.ReplicatedStorage:WaitForChild("Status")
local clonedSky

if game.ServerStorage.Stormy_Sky then
    print("Yes.")
end
Status:GetPropertyChangedSignal("Value"):Connect(function()

    if Status.Value == "Game in progress." then
        clonedSky = game.ServerStorage.Overcast:Clone()
        print(clonedSky)
        clonedSky.Parent = game.Lighting
        clonedSky.Name = "Overcast"
        game.Lighting.ClockTime = 1
    else
        if game.Lighting.Overcast then
            game.Lighting.Overcast:Destroy()
        end
        game.Lighting.ClockTime = 12
    end

end)

Do I need to change it to a Script?

PS. It won't print "Yes."