/// initialise some comboboxes
        private void BeforeShowDetailsManual(ARecurringJournalRow ARow)
        {
            // SubSystemCode: the user can only select GL, but the system can generate eg. AP journals or GR journals
            this.cmbDetailSubSystemCode.Items.Clear();
            this.cmbDetailSubSystemCode.Items.AddRange(new object[] { ARow.SubSystemCode });

            TFinanceControls.InitialiseTransactionTypeList(ref cmbDetailTransactionTypeCode, FLedgerNumber, ARow.SubSystemCode);
        }