I need help with an issue. My payment amount is dependent on whether they are signing the contract before a certain date. If they sign before Dec 1 they are given a $250 discount on our fee of $2000. I initially made a formula to calculate the amount by using date diff. if(DateDiff( [dec1] , [date2] )>=1,(2000-250),2000) and that works for the amount but then when I create a payment field to equal that amount it says that I cannot have date references in a payment item. Please help with a solution.