public override void Input0_ProcessInputRow(Input0Buffer Row)
    {

        Row.ProcessFlag = false; // Processing is set to false by default - we only want to process rows if they are valid
        string alphaRegex = @"[a-zA-Z]"; // regex to check if contains alpha characters

        // Check if the row is the header column (ToCurrency value) or the exchange rate value
        // If the value contains alpha characters we know it is either the ToCurrency name
        if ((Regex.IsMatch(Row.Amount, alphaRegex)) && String.IsNullOrEmpty(Row.ExchangeRateType))
        {

            // If the dictionary list does not currently have a key for this currency, add it
            // NOTE: the key is the column name of the Excel file (ex: F3) and the value is the currency (ex: JPY)
            if (!list.ContainsKey(Row.ToCurrencyColumn))
            {
                list.Add(Row.ToCurrencyColumn, Row.Amount);
            }

        }

        // After processing the dictionary values (the first set of rows), we now process the amounts
        // Perform a lookup to the dictionary list by passing in the ToCurrenyColumn (ex: F3) and get the ToCurrency name (ex: JPY)
        if (list.ContainsKey(Row.ToCurrencyColumn))
        {
            Row.ToCurrency = list[Row.ToCurrencyColumn];
            Row.ProcessFlag = true;
        }

    }