You have to select .1.3.6.1.4.1.9.9.13.1.3.1.2 (or any other working OID inside .1.3.6.1.4.1.9.9.13.1.3.1) as table's base OID, and use .1.3.6.1.4.1.9.9.13.1.3.1.2, .1.3.6.1.4.1.9.9.13.1.3.1.3, etc. for column OIDs. I've created short document with working SNMP table example: http://wiki.netxms.org/wiki/Creating_SNMP_table_DCI.
Best regards,
Victor
