com.ibm.gre.IRMResultList.getItemByRowColumnIndex Function
This is a variation on the above method. The FlPlnCmpntAttrDefColNm does not have to be known only the index of the column in the table.

Public string getItemByRowColumnIndex (int, int)
  Type Name Description  
    int row Use this value to specify the index value of the Item (row) in the result set to return the value for.  
    int column Use this value to specify the index value of the column in the table  
  Return Description  
    string Returns the value of the XML attribute in the specified position.