try
     ibec_ExtractMetadata(DB, 'ALLDATA',
     'DescriptionsAsUpdate;
     DateFormat=YYYY-MM-DD;
     Domains=NONE;
     Tables=NONE;
     Views=NONE;
     Procedures=NONE;
     Triggers=NONE;
     Generators=NONE;
     Exceptions=NONE;
     UDFs=NONE;
     Roles=NONE;
     DataTables=TABLENAME1, TABLENAME2, TABLENAME3', 
     cbb);