private void OnMergedItemSelected(SelectorViewModel obj)
{
obj.Select();
var paymentAmount = SelectedTotal;
var remaining = decimal.Round(Model.GetRemainingAmount() / Model.ExchangeRate, 2);
if (Math.Abs(remaining - paymentAmount) <= 0.01m)
paymentAmount = remaining;
_tenderedValueViewModel.PaymentDueAmount = paymentAmount.ToString("#,#0.00");
_tenderedValueViewModel.TenderedAmount = "";
}
