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public static PaymentParams createReversal(String trxReference) {
        PaymentParams params = new PaymentParams(PaymentServiceID.Cancellation);
        
        //Date //Time //Timezone
        Calendar cal = Calendar.getInstance();
        int utcOffsetMinutes = cal.getTimeZone().getOffset(cal.getTimeInMillis()) / 1000 / 60;
        byte[] utcOffset = new byte[2];
        utcOffset[0] = (byte) (utcOffsetMinutes / 60);
        utcOffset[1] = (byte) (utcOffsetMinutes % 60);
        params.paramTree.AddEMVDate(ArkosTags.TransactionDate, cal.get(Calendar.YEAR) % 100, cal.get(Calendar.MONTH) + 1, cal.get(Calendar.DAY_OF_MONTH));
        params.paramTree.AddEMVTime(ArkosTags.TransactionTime, cal.get(Calendar.HOUR), cal.get(Calendar.MINUTE), cal.get(Calendar.SECOND));
        params.paramTree.AddBin(ArkosTags.LocalTimezone, utcOffset);

        //Language
        params.paramTree.AddAscii(ArkosTags.SelectedLanguage, "en");
        
        TlvTree originalTransaction = params.AddChild(ArkosTags.OriginalTransaction);
        originalTransaction.AddEMVDate(ArkosTags.TransactionDate, cal.get(Calendar.YEAR) % 100, cal.get(Calendar.MONTH) + 1, cal.get(Calendar.DAY_OF_MONTH));
        originalTransaction.AddEMVTime(ArkosTags.TransactionTime, cal.get(Calendar.HOUR), cal.get(Calendar.MINUTE), cal.get(Calendar.SECOND));
        originalTransaction.AddAscii(ArkosTags.ReferenceData,"1234567890");
        originalTransaction.AddEnum(ArkosTags.SelectedService, PaymentServiceID.Payment);
        
        params .AddBin(ArkosTags.TransactionAmount, new byte[] { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 });
        params .AddBin(ArkosTags.AmountAuthorised, new byte[] { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 });
        params .AddBin(ArkosTags.TransactionAmountBeforeAdjustment, new byte[] { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 });
        
        return params;
    }