on rightclick on sign:
	if line 1 is "&r[&1Comprar&r]":
		cancel event
		set {_preco} to line 3 parsed as integer
		if player's balance is greater than {_preco}:
			remove {_preco} from player's balance
			send "&c&lVoce pagou &f&l%{_preco}%$&c&l"