Script not detecting leaderstat value?

My script isn't detecting a leaderstat value? Here is the script:

Sever Script

local purchases = game.Players.LocalPlayer.leaderstats.Purchases.Value

game.Players.PlayerAdded:connect(function(Player)
	if Player.leaderstats.Purchases == 1 then
		game.StarterGui.ScreenGui.Frame1.Desert.Visible = true
	else
		game.StarterGui.ScreenGui.Frame1.Desert.Visible = false
end
end)

Does anyone know how to fix this?

You can't find game.Players.LocalPlayer in a script, this needs to be done in a localscript

it didn't work

game.Players.PlayerAdded:connect(function(Player) if Player.leaderstats.Purchases.Value == 1 then game.StarterGui.ScreenGui.Frame1.Desert.Visible = true else game.StarterGui.ScreenGui.Frame1.Desert.Visible = false end end)

Here dude, try this:

game.Players.PlayerAdded:connect(function(Player)
    if Player.leaderstats.Purchases.Value == 1 then
        game.Players[Player].PlayerGui.ScreenGui"Frame1".Desert.Visible = true
    else
        game.Players[Player].PlayerGui.ScreenGui"Frame1".Desert.Visible = false
end
end)