How to insert Data into LedgerJournalTrans and LedgerJournalTrans_Asset

Here is an example of a job

// Changed on 22 Jui 2011 at 17:28:00 by ibs
static void Import_Immobilisations(Args _args)
{
    LedgerJournalTrans_Asset                ledgerJournalTrans_Asset;
    container                               c;
    AssetledgerAccounts                     assetledgerAccounts;
    TextIo                                  io;
    String50                                filename;
    AssetTransType                          assetTransType;
    LedgerJournalTrans                      ledgerJournalTrans, LedgerJournalTrans_Update;
    AssetTransTypeJournal                   assetTransTypeJournal;
    AssetId                                 assetId;
    AssetBookId                             assetBookId;
    AssetTransType                          TransType;
    String30                                stringdate;
    ExchRates                               ExchRates;
    LedgerJournalNameId                     LedgerJournalNameId;
    NumberSeq                               numSeq1, numSeq2;
    Voucher                                 Voucher1, Voucher2 ;
    LedgerJournalACType                     LedgerJournalACType;
    AssetGroupId                            AssetGroupId;
    TextBuffer                              amount;

    ;


    delete_from LedgerJournalTrans_Asset where LedgerJournalTrans.createdBy =='ibs';
    delete_from LedgerJournalTrans where LedgerJournalTrans.createdBy       =='ibs';
    amount = new TextBuffer();
    fileName = @"C:\\IMMOB\IMMOBILISATIONS_I.csv";
    io = SysLicenseCodeReadFile::openFile(fileName,'r');
    if (!io)
        throw error(strfmt("@SYS18678",fileName));
    io.inFieldDelimiter(";");
     c = io.read();

    numSeq1                                     = NumberSeq::newGetVoucherFromCode(LedgerJournalName::find('Invest').VoucherSeries, true );
    numSeq2                                     = NumberSeq::newGetVoucherFromCode(LedgerJournalName::find('Invest_I').VoucherSeries, true );

    Voucher1                                    = numSeq1.voucher();
    Voucher2                                    = numSeq2.voucher();

    numSeq1.used();
    numSeq2.used();


    while (io.status() == IO_Status::Ok)
    {
        c = io.read();

        if (io.status() != IO_Status::Ok)
          break;

        assetBookId                             = conpeek(c,1);
        assetId                                 = conpeek(c,4);
        stringdate                              = conpeek(c,7);
        assetTransType                          = AssetTransType::Acquisition;
        AssetGroupId                            = conpeek(c,2);

        if (LedgerJournalTrans::findAssetId(assetId, true).RecId == 0  && assetId != '' )
        {

            if( conpeek(c,5) == '1' )
            {
                LedgerJournalNameId                     = 'Invest';
                LedgerJournalTrans.JournalNum           = LedgerJournalTable::findByName(LedgerJournalNameId).JournalNum;
                LedgerJournalTrans.Voucher              = Voucher1;
            }
            else
            {
                LedgerJournalNameId                     = 'Invest_I';
                LedgerJournalTrans.JournalNum           = LedgerJournalTable::findByName(LedgerJournalNameId).JournalNum;
                LedgerJournalTrans.Voucher              = Voucher2;
            }

            ledgerJournalTrans.Company              = curext();
            LedgerJournalTrans.currencyCode         = 'TND';
            LedgerJournalTrans.OffsetAccountType    = LedgerJournalACType::Ledger;
            LedgerJournalTrans.AccountNum           = assetId;
            LedgerJournalTrans.AccountType          = LedgerJournalACType::FixedAssets;
            LedgerJournalTrans_Asset.BookId         = assetBookId;
            LedgerJournalTrans.Txt                  = conpeek(c,6);
            amount.setText(conpeek(c,8));
            amount.replace(',','.');
            LedgerJournalTrans.AmountCurDebit       = str2num(amount.getText());
            LedgerJournalTrans.TransDate            = str2date(stringdate,123);
            LedgerJournalTrans.OffsetAccount        = AssetLedgerAccounts::findLedgerAccount(assetBookId,"IMMOB",assetTransType).LedgerOffsetAccount;
         //   LedgerJournalTrans.OffsetAccount        = AssetLedgerAccounts::find(assetBookId,"IMMOB",assetTransType,TableGroupAll::GroupId,AssetGroupId).LedgerOffsetAccount;
            LedgerJournalTrans.Qty                  =  str2num(conpeek(c,5));
            LedgerJournalTrans.PostingProfile       = "IMMOB";
            LedgerJournalTrans.ExchRate             = Currency::exchRate(ledgerJournalTrans.currencyCode);


            LedgerJournalTrans.insert();

            select recId, Company from LedgerJournalTrans_Update where LedgerJournalTrans_Update.RecId == LedgerJournalTrans.RecId;
            if ( LedgerJournalTrans_Asset::find(LedgerJournalTrans_Update.RecId).RefRecId == 0)
            {
                LedgerJournalTrans_Asset.AssetId        = assetId;
                LedgerJournalTrans_Asset.BookId         = assetBookId;
                LedgerJournalTrans_Asset.TransType      = AssetTransTypeJournal::Acquisition;
                LedgerJournalTrans_Asset.RefRecId       = ledgerJournalTrans.RecId;
                ledgerJournalTrans_Asset.Company        = LedgerJournalTrans_Update.Company;


                LedgerJournalTrans_Asset.insert();
            }
            print 'inserted';

            }

    }
    info("finished");
}