Trying to check if a player bought something from the shop

Context: When the player buys this item, his money output will go to 2x

Hello. I’m trying to make a shop system where if you buy a certain item your money drop amount would increase to you getting double instead of 1.

current script:

local upgradeBought = rs:WaitForChild("remoteEvents").upgradeBoughtLitter
local MoneySound = workspace.MoneySound

upgradeBought.OnServerEvent:Connect(function(player, price)
	local leaderstats = player:WaitForChild("leaderstats")
	local cash = leaderstats:WaitForChild("money")
	if cash.Value >= price then 
		cash.Value -= price 
		local LitterBox = rs:WaitForChild("Litter Box"):Clone()
		LitterBox.Parent = workspace

i have added a boolvalue inside the upgradeBoughtLitter remote but I have no idea how to access it and set it to true. Could someone please explain to me how to access a boolvalue and to check if its true? Thanks.