I have a BoolValue, and it's value is very annoying to change... Anyone can help with this?

game.Players.PlayerAdded:Connect(function(plr)

    local leaderstats= Instance.new("Folder")
    leaderstats.Name = "leaderstats"
    leaderstats.Parent = plr
    local cash = Instance.new("IntValue")
    cash.Name = "Dollars"
    cash.Value = 122000
    cash.Parent = leaderstats
    game.Players.LocalPlayer.PlayerGui:WaitForChild("Camaro", 10).Camaro.Purchased.Value = false
end)

game.ReplicatedStorage:WaitForChild("CheckPrice").OnServerInvoke = function(player, NameOfCar)
    return game.ServerStorage.Cars:FindFirstChild(NameOfCar).Price.Value
end

This script is in ServerScriptService, and someone suggested that the value should be set from here as it automatically runs. A GUI is also set in a 'phone' which sees whether a value is true or false, True = car spawner is there False = car spawner isn't there

local gui = game.Players.LocalPlayer.PlayerGui:WaitForChild("Camaro", 10).Camaro.Purchased -- add a waitforchild
local chevy = script.Parent.Parent.Chevy
script.Parent.MouseButton1Click:connect(function()
    wait(0.3)
    if gui.Value == true then
        chevy.BackgroundTransparency = 0
        chevy.ImageTransparency = 0
        chevy.Purchase.BackgroundTransparency = 0
        chevy.Purchase.TextStrokeTransparency = 0
        chevy.Purchase.TextTransparency = 0
print("under")
    elseif gui.Value == false then
        print("hello")


    end
    end)

It always seems to print 'under' in the output, whether the purchase is true or 'false'. The BoolValue is controlled through the Car purchase Gui.

    script.Parent.MouseButton1Click:connect(function()

        local PriceOfItem = game.ReplicatedStorage:WaitForChild("CheckPrice"):InvokeServer(script.Parent.Parent.Name)
        local purchase = script.Parent
        local playermoney = game.Players.LocalPlayer.leaderstats.Dollars.Value
        local purchasedvalue = game.Players.LocalPlayer.PlayerGui:WaitForChild("Camaro", 10).Camaro.Purchased
        purchasedvalue.Value = false

        if playermoney >= PriceOfItem then
          playermoney = playermoney - PriceOfItem
        purchase.BackgroundColor3 = Color3.new(255,23,23)
        purchase.Text = "Purchased!"
        wait(2)
        purchase.BorderColor3 = Color3.new(255,0,0)
        purchase.Text = [[Already
        Purchased]]
        purchase.TextSize = 40
        purchasedvalue.Value = true
        print("purchased")
         elseif playermoney < PriceOfItem then
            purchase.BorderColor3 = Color3.new(255,0,0)
            purchase.BackgroundColor3 = Color3.new(255,23,23)
            purchase.Text = [[Not enough
            money!]]
            purchase.TextSize = 40
            wait(3)
            purchase.BackgroundColor3 = Color3.new(23,255,23)
            purchase.BorderColor3 = Color3.new(0,255,0)
            purchase.Text = "Purchase"
            purchase.TextSize = 75
            purchasedvalue.Value = false
            print("not purchased")
        end
end)

Anyone can help?