How should I save a BASIC number value? I am having a real hell with this...

I commented on most lines that have importance in the script, if you have any questions let me know. What this does is loads the saved data if they have it, or saves it when they leave.

local DS = game:GetService('DataStoreService'):GetDataStore('SpecialRockValue')

game:GetService('Players').PlayerAdded:Connect(function(plr)
    local SpecialRocks = Instance.new('IntValue')
    SpecialRocks.Parent = plr
    SpecialRocks.Name = 'SpecialRocks'

    local key = 'id-'..plr.UserId -- get the UserId for the key (better than username as people can change their name)

    local getSavedData
    pcall(function() -- Use pcall in case the retrieval fails
        getSavedData = DS:GetAsync(key) -- get saved data using the key(if there is any)
    end)


    if getSavedData then -- if there is saved data then
        SpecialRocks.Value = getSavedData[1] -- load saved data
    else
        local ValuesToSave = {SpecialRocks.Value} -- table for values you want to save
        DS:SetAsync(key,ValuesToSave) -- save all the values in the table
    end
end)

game:GetService('Players').PlayerRemoving:Connect(function(plr)
    local key = 'id-'..plr.UserId -- get the userId for the key

    local ValuesToSave = {plr.SpecialRocks.Value} -- table for values you want to save
    DS:SetAsync(key,ValuesToSave) -- save all values in table
end)