Print Label when a certain condition is met

[talktime]

i have a report that serves the pupose of reminder to students that they have not paid their fee of the months listed in detail section, listing of month varies student to student, some student have only current month fee due, some have 3 or 4 month fee due, i want a label "Last reminder" to print on those students whose outstanding fee is more than current month i.e. current plus previous months. if a student has only current month fee due, this label should not be printed on his reminder. a sample of my report designe is attached.