public void DepositCash() //used to deposit cash into the current user's account. { WriteLine("DEPOSIT CASH\n"); d1: Write("\nEnter the cash amount you want to deposit: "); string tmp = ReadLine(); bool isValid = bll.AmountValidation(tmp); if (!isValid) { Write("\n=> Invalid Input\n"); goto d1; } decimal amount = decimal.Parse(tmp); Transactions ts = bll.DepositCash(cbo, amount); AskForReceipt(ts, cbo); }