Hi.
I need an input box where the user enters a date in format yyyy-mm-dd OR yyyy/mm/dd (all 4 digits of year entered and single numbered days and months must have a leading 0).
This date must be greater than sheet1 N1.
The valid entry of the input box will be stored in sheet 1 O1.
If a valid entry is not entered the input box will persist! (No cancel choice).

Thanks