i am trying to display an error message if a customer is over 18----- topmostSubform.Page1.dob::exit: - (FormCalc, client) ---------------//todays datevar today = num2date(date(), DateFmt(1))//difference between today and date of birth 'dob'var diff = today - Date2Num(dob.rawValue, "DD/MM/YYYY")//is...