Monthwise number sequence in SO and PO

Refreshing the number sequencing for sales order each month so that sales order creation month can be identified based on the number.
Initial setup:

/// This batch will update the numbersequence format ‘yr/Month/######’ for salesorder number.
///

class Monthwisenumberseq extends RunBaseBatch
{
}

// new method
protected boolean canGoBatchJournal()
{
     return true;
}

// new method
public void run()
{
     NumberSequenceReference     numberseqref;
     NumberSequenceTable            numberSeqTable;
     container                                   segments;
     str                                              annotatedFormat, format, datestr;
     ;

     ttsBegin;
     datestr = date2str(systemDateGet(),
             321,
             DateDay::Digits2,
             DateSeparator::Slash, // separator1
             DateMonth::Short,
             DateSeparator::Slash, // separator2
             DateYear::Digits4,
             DateFlags::None);
             datestr = subStr(datestr, 1, strLen(datestr)- 2);
             segments = [[-1,datestr]];
             segments += [[-2,'######']];

     annotatedFormat = NumberSeq::createAnnotatedFormatFromSegments(segments);

     format = NumberSeq::createAnnotatedFormatFromSegments(segments, false);

     numberseqref = NumberSeqReference::findReference(extendedTypeNum(SalesId));

     select firstOnly forupdate numberSeqTable
         where numberSeqTable.RecId == numberseqref.NumberSequenceId &&
                    numberSeqTable.NumberSequenceScope == numberseqref.NumberSequenceScope;

  if (numberSeqTable)
  {
           numberSeqTable.AnnotatedFormat = annotatedFormat;
           numberSeqTable.Format = format;
           numberSeqTable.NextRec = 1;
           numberSeqTable.doUpdate();
   }
   ttsCommit;
}

// new method
public static ClassDescription description()
{
     return “Monthwise numbersequence”;
}

// new method
public server static void main(Args _args)
{

    Monthwisenumberseq monthwisenumberseq = new Monthwisenumberseq();

    if (monthwisenumberseq.prompt())
    {
          monthwisenumberseq.run();
    }
}