1. What is the problem? Be very detailed.
I have electronic bill system I want to limit Submitted answer for example
the total of BILL AMOUNT of customer is =10000 today he pay 9000 i Submitted this answer today
the day after the customer pay should pay only =1000 how to limit this asSubmitted this answer the day after so he paid all of his BILL AMOUNT the problem is that i want to fix it here
if i want to add third pay for his bill should not be allowed to add could help me in this
not to get more answer for the bill when he paid all of his bill