For the first one you could do (in formcalc):if (Date2Num($.formattedValue, "DD/MM/YY") < 41123 and Date2Num($.formattedValue, "DD/MM/YY") <> 0) then xfa.host.messageBox("Your arrival date cannot be before 03/08/12", "My message",1) $ = ""endifyou need to make sure you set the input pattern t...