[SOLVED]Save if you already touched a part?

im trying to make it so when you have touched the part, it will add stats once. When you leave the game and join back and touch the part, it will not add the stats because you already touched the part before. Basically like a datastore but with touching a part and not number values

--//ServerScript
wait(2)

local sell = script.Parent
local debounce = false
local tool = game.ReplicatedStorage.Present
local toFire = script.Parent.Client
local ds = game:GetService("DataStoreService")
local dss = ds:GetDataStore("NotMyRealDataStoreNameBtw")

game.Players.PlayerAdded:Connect(function(plr)
local key = "upgrade-"..plr.UserId
local folder = Instance.new("Folder",plr)
folder.Name = "Upgrades"
local save = dss:GetAsync(key)

if save then
    for i = 1,#save do
        local temp = Instance.new("BoolValue",folder)
        temp.Name = save[1]
    end
end
end)

sell.Touched:Connect(function(hit)
    if not debounce then
    debounce = true
    if hit.Parent:FindFirstChild("Humanoid")then
        local plr = workspace[hit.Parent.Name]
        local player = game.Players:GetPlayerFromCharacter(plr)
        local key = "upgrade-"..player.UserId
        local bool = Instance.new("BoolValue",player.Upgrades)
        bool.Name = "Upgrade"
        bool.Value = true
        local activated = {}
        local Capacity = game.ReplicatedStorage.Capacity
        local upgrades = player:WaitForChild("Upgrades")
        local money = player.leaderstats.Money

        if not upgrades:FindFirstChild("Upgrade")and money.Value >= 2000 then
        local reward = 25
        Capacity.Value = Capacity.Value + reward
            for i,v in pairs(player.Upgrades:GetChildren())do
            if v:isA("BoolValue")then
                table.insert(activated, v.Name)
                dss:SetAsync(key,activated)
                print("Upgrade Success")
            else
                print("Upgrade already purchased")
                Capacity.Value = Capacity.Value + 0
        wait(1)
        debounce = false

                end
            end
        end
    end
    end
end)