How to auto select filters in spotfire

问题

I have a list box filter in spotfire. Is it possible to auto select one of the values in the filter list. Ultimately when I filter on B, I should able to see data for both B and A(which was auto selected)

TASK,SERVICE,MONTHYEAR ARE MY FIELDS AND TOTALLY THERE ARE 15 RECORDS
TASK    SERVICE       MONTHYEAR
    NA        NOV-15
    NA        APR-16
TASK1   SERVICE1      JUL-15
    NA        SEP-15
    NA        DEC-15
    NA        FEB-16
TASK2   SERVICE2      AUG-15
    NA        JUL-16
    NA        MAR-16
    NA        JUN-16
    NA        OCT-15
    NA        JAN-16
    NA        MAY-16
    NA        JUL-15
    NA        AUG-15

As you can see in the above dataset data is present only for monthyear jul-15 and aug-15. I had to add the remaining 13 months and place NA in place of service which would display zero. Selection of this 'NA' is mandatory with any other filter to display the zero count. Is there any way to select 'NA' automatically, so that I can only filter on either 'service1' or 'service2' to display the result.

来源：https://stackoverflow.com/questions/38859326/how-to-auto-select-filters-in-spotfire