How could I write Group Expressions in iReport 3.7.1 with groups and sub groups dependencies?
My report output should be as below:
A1
B1
C1
Person 1
Person 2
A2
B2
C3
Person 3
A2
B3
C4
Person 4
C4
Person 5
NB : C is sub group of B and B is a sub group of A. B appears only when it has a new value (person 4 and person 5 have the same value B3 => B3 appears only the first time and we that person 5 has B3). I just want the group A to appear every time the group B changes, just like the case of Person 3 and Person 4, we have the same group A (A2) but B has changed from B2 to B3 => A2 should appear even if it still has the same value.
How can i make this dependency?