How to use a normal table as a temporary table in Microsoft Dynamics 365 for Finance and Operations through X++

How to use a normal table as a temporary table in
Microsoft Dynamics 365 for Finance and Operations through X++

        CustTable custTable;

        custTable.setTmp();

        custTable.AccountNum  = 'CUST-0001';

        custTable.Currency    = 'USD';

        custTable.Party = 1;

        custTable.doInsert();

        custTable.clear();

        custTable.AccountNum  = 'CUST-0002';

        custTable.Currency    = 'JOD';

        custTable.Party = 2;

        custTable.doInsert();