I have this data store script that i think should work but it doesn't?. please help

I know the first part works but its the part where it saves when you click the gui that doesn't.

local DataStore = game:GetService("DataStoreService")
local DS1 = DataStore:GetDataStore("ExampleDataStore")



game.Players.PlayerAdded:connect(function(player)
    local leader = Instance.new("Folder",player)
    leader.Name = "leaderstats"
    local Bricks = Instance.new("IntValue",leader)
    Bricks.Name = "bricks"
    Bricks.Value = DS1:GetAsync(player.UserId) or 0
    DS1:SetAsync(player.UserId, Bricks.Value)
    local SaveGUI = game.StarterGui.SaveGUI.SaveGUIFrame.SaveGUIButton


game.Players.PlayerRemoving:connect(function(player)
    print("Saveing Data")
    DS1:SetAsync(player.UserId, player.leaderstats.Bricks.Value)
    print(player.Name.."'s Data of"..player.leaderstats.Bricks.Value.." "..player.leaderstats.Bricks.Name.."has been saved!")

end)

this is what doesn't work

SaveGUI.MouseButton1Click:connect(function()
    DS1:SetAsync(player.UserId, player.leaderstats.Bricks.Value)
    print("Saved!")
end)

end)