(FIXED) Script gives me error when I try and locate a BoolValue in a ScreenGUI, how to fix?

(Friend solved it for me) I am making a script that detects when a player respawns, that toggles a BoolValue inside of a ScreenGUI, but for some reason it gives me an error when I try and locate it via script. Here is my code:

local Players = game:GetService("Players")

local function onCharacterAdded(character)
    local plr = game.Players:GetPlayerFromCharacter(character)
    plr.PlayerGui.HauntedSS.UsingScript.Value = false --here is where the error occurs
    print(plr.Name .. " has spawned")
end

local function onCharacterRemoving(character)
    local plr = game.Players:GetPlayerFromCharacter(character)
    plr.PlayerGui.HauntedSS.UsingScript.Value = false 
    print(plr.Name .. " is despawning")
end

local function onPlayerAdded(player)
    player.CharacterAdded:Connect(onCharacterAdded)
    player.CharacterRemoving:Connect(onCharacterRemoving)
end

Players.PlayerAdded:Connect(onPlayerAdded)