I have a form that has two fields, "Projected Opening Date" and "Requested Class Date", and I need to link them so that the data between the two converse. The "Projected Opening Date" is dependent variable and the "Requested Class Date" is the independent variable. I need to place some sort of limiter on the field that will not allow the respondent to be able to register for the class if the Projected Opening Date is 3mos or longer from the Requested Class Date. Any help with this issue would be great. Thanks.