I have a table DCI with the following data:

      COL1 (integer) |    COL2 (string) | VAL
       -----------------------------------------
          1          |       TEST1      |     5
          2          |       TEST1      |    10
          1          |       TEST2      |      8
          2          |       TEST2      |      6

COL1 is an instance column (key) and COL2 is instance column (key). All columns have aggregation set to SUM.

When creating a Pie Chart on dashboard based on the table DCI, I am setting the instance column to COL1 and Data Column to VAL. The pie chart is displaying two parts/arcs (1 and 2) but the value appearing is only of one row from each instance [5 and 10]. My expectations is that the VAL values are aggregated so that 1 has value 13 and 2 has value 16.

Could someone please tell me what I'm doing wrong here.

Thanks.