[Koha] Help!!!

Hi, I have a problem in the system 1.2.3 and 2.0 i have configurate the fines charges in the twon versions but when i go to the pay charges in the memebr seccion the fines is not appear whe the loan period is expiered, and the system is not sayme if the memember has a fines. But when i go to reports the report is say me who and what item is overdue but i need that the system say the charge in the bill on the pay charges seccion? How can i correct this error? Why the system is not taken the fines in the bill on the members seccion? thanks, Javier