multiple SO invoice invoicing with single invoice ID

static void Job217(Args _args)
{
    SalesFormLetter salesFormLetter;
    QueryRun queryRun;
    Query query;
    str strSalesTable = "TSSO00001979, TSSO00001982";// "000630,000631,000643";
    int64  salesline1,salesline2;
    str saleslines;
   
    SalesTable salesTable;
    SalesLine salesLine;
    ;
    //TSSO00001961
    //TSt00000199
   
    select salesLine where salesLine.SalesId == "TSSO00001961";
    salesline1 = salesLine.RecId;
    salesLine.clear();
   
    select salesLine where salesLine.SalesId == "TSt00000199";
   
    salesline2 = salesLine.RecId;
    saleslines = strFmt("%1,%2",salesline1,salesline2);
   
   
    salesFormLetter = SalesFormLetter::construct(DocumentStatus::Invoice);

    query = new Query(QueryStr(SalesUpdate));
    //query.dataSourceTable(tablenum(SalesTable)).addRange(fieldnum(SalesTable, SalesId)).value(strSalesTable);
   
    query.dataSourceTable(tablenum(salesLine)).addRange(fieldnum(salesLine, RecId)).value(saleslines);
    queryRun = new QueryRun(query);

    salesFormLetter.chooseLinesQuery(queryRun);
    salesFormLetter.transDate(systemdateget());
    salesFormLetter.specQty(SalesUpdate::All);
   
    salesFormLetter.chooseLines(); 

    salesFormLetter.run();
   
    info("done");

}