private void startBtn_Click(object sender, EventArgs e)
        {
            StopButtonState(true);
            StartButtonState(false);

            bankSimulator = new BankSimulator(uiHelper, bankVaultAmount, numberCustomers, numberTellers, custInitialAmount, custGoal, maxTransactionAmount);
        }
        private void btnStart_Click(object sender, EventArgs e)
        {
            if (ValidateInputFields())
            {
                if (uiHelper == null)
                {
                    uiHelper = new UIHelper(this);
                }

                //if (bankSimulator == null)
                //{
                    //form.bankGroupBox1.Enabled = false;
                    //form.transactionsGroupBox2.Enabled = false;
                    //form.txbxCustGoalAmount.Enabled = false;

                    this.bankSimulator = new BankSimulator(uiHelper, numTellers, numCustomers, custGoalAmount, initialBankVaultBalance, maxTransAmount, custInitialAmount);
                //}
            }
        }