ServerScriptService.Script:10: attempt to perform arithmetic (add) on number and Instance?

i have a donation thing.

script.Parent.Parent.Frame.GenerateBox.Changed:Connect(function()
	game.Players.LocalPlayer.PlayerGui.DonateGampas.GenerValue.Value = game.Players.LocalPlayer.PlayerGui.DonateGampas.Frame.GenerateBox.Text
end)

^^ the value thats getting from a text box

the remote event sender:

local frame = script.Parent.Parent
clicked = false
script.Parent.MouseButton1Click:Connect(function()
	if clicked == false then
		if game.Players.LocalPlayer.PlayerGui.DonateGampas.GenerValue.Value > 10 then
			clicked = true
		script.Parent.Parent.warning.Visible = true
		script.Parent.Parent.warning.Text = "?? ?????? 10!"
			wait(3)
			script.Parent.Parent.warning.Visible = false
			clicked = false
		else
			clicked = true
			script.Parent.Parent.warning.Visible = true
			script.Parent.Parent.warning.Text = "????????? "..game.Players.LocalPlayer.PlayerGui.DonateGampas.GenerValue.Value + 2 .." ??????"
			wait(game.Players.LocalPlayer.PlayerGui.DonateGampas.GenerValue.Value + 2)
			game.ReplicatedStorage.GenerateEvent:FireServer(game.Players.LocalPlayer, game.Players.LocalPlayer.PlayerGui.DonateGampas.GenerValue.Value)
			clicked = false
			script.Parent.Parent.warning.Visible = false
		end
		end
end)

now the recieving

local id

game.ReplicatedStorage.GenerateEvent.OnServerEvent:Connect(function(player, valuee)
	id = player.UserId
	if game:GetService("MarketplaceService"):UserOwnsGamePassAsync(id, 41578622) then
		warn(id)
		warn(valuee)
		warn(player.leaderstats["???????"].Value)
		--warn(player.PlayerGui.DonateGampas.GenerValue.Value)
		player.leaderstats["???????"].Value += valuee
	else
		player:Kick("imagine exploiting ahahahahaha????")
	end
end)

but i cant add to leaderstats value an events function value.

Problem

When you're firing to the server using :FireServer you don't need to pass a Player argument. It is automatically done for you.

Problem is located on line 17 in the second code block