I have designed infopath form with 2 views. One is Requester another one is Approver. I have repeating table in requester view with field like Item and Amount. The same repeating table has been used in approver view as well. I have a functionality like whatever amount requester will enter Approver can change the amount upto 20% of the requester entered amount. Once Approver try to change more than 20%, he will not able be to enter the amount. How can I restrict the approver to enter upto 20% extra amount only.....your help is appreciated.