Groups with subtotals, is there an esier way?

[gregory.west]

I have a report is Jasper Studio.  The report is sorted on part_number, and has a group (Group1) based on part_number.  I have a variable Sum_OO which is:

Name:  Sum_OO

Value Class Name:  java.lang.Double

Calculation:  Sum

Expression:  $F{qty}-$F{ship}

Initial Value Expression:

Increment type: [Group] Group1

Incrementer Factory Class Name:

Reset Type: [Group] Group1

What happens is on the Group1 footer I get $V{Sum_OO} printed, but it only contains the last calculation.  Not the total for the group (or the total for the report).

 

What am I doing wrong, I agree this can not be this hard.

[hozawa]

Try setting the initial value.

[zh3ntil]

you don't need to give an increment type for this case. Try 'None' for increment type.