Coins wont add/go away when you click a button?

So I have this coin system and Right here is the code that gives the coins to you when a player dies or you kill a player

game.Players.PlayerAdded:connect(function(player)

	local leaderstats = Instance.new("Folder",player)
	leaderstats.Name = "leaderstats"

	local cash = Instance.new("IntValue",leaderstats)
	cash.Name = "Cash"
	cash.Value = 0

	local kills = Instance.new("IntValue",leaderstats)
	kills.Name = "Kills"
	kills.Value = 0


	player.CharacterAdded:connect(function(character)
		character:WaitForChild("Humanoid").Died:connect(function()

			local CreatorTag = character.Humanoid:FindFirstChild("creator")

			if CreatorTag and CreatorTag.Value then

				local stats = CreatorTag.Value:WaitForChild("leaderstats")

				stats["Cash"].Value = stats["Cash"].Value + 20
				stats["Kills"].Value = stats["Kills"].Value + 1         
			end
		end)
	end)
end)

It Is in a regular script btw and I tried doing this under the button(that gives the weapon)

script.parent.MouseButton1Click:connect(function()
leaderstats.Cash.Value = 5
end

also I cut out the code that gives the weapon for the sake of saving space. and it wont work im not sure why? could anyone help