[Koha] Problem in Circulation

[young librarian]

Hi friends
  I am using koha window version. server information is as follows:
   
  Koha version2.2.4
  OS version Microsoft Windows XP [Version 5.1.2600] 
  Perl version5.008007
  MySQL versionmysql Ver 12.22 Distrib 4.0.26, for Win32 (ia32) 
  Apache version
   
  I have successfully started using circulation through koha. but there is a problem in issue section. I have defined issuing rules for the students as after 7 days they have to pay Rs 5 per day as fine. But when i make a checkout to the user, It shows the fine from the very first day in user's account. I don,t know where I am doing wrong. 
  Plz help me
   
  Thanx

 			
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