you have to try first run test system . static void xxx(Args _args) { invoiceId NumFacturaDesde; invoiceId NumFacturaHasta; CustInvoiceJour _custinvoicejour; CustInvoiceSalesLink _custinvoicesaleslink; CustInvoiceTrans _custinvoicetrans; LedgerTrans _ledgertrans; CustTrans _custtrans; CustTransOpen _custtransopen; InventTrans _inventtrans; TaxTrans _taxtrans; CustBillOfExchangeInvoice _CustBillOfExchangeInvoice; CustBillOfExchangeTrans _CustBillOfExchangeTrans; CustSetTlement _CustSetTlement; InvoiceDate FechaBuena; ; //Inicializamos variables NumFacturaDesde = '035884'; NumFacturaHasta = '035884'; FechaBuena = str2date("22.04.2005",123); ttsbegin; _custinvoicejour.clear(); SELECT FORUPDATE * FROM _custinvoicejour WHERE _custinvoicejour.InvoiceId>=NumFacturaDesde && _c...