I am using two date fields to update the number of nights between the two dates using the On User Input command.

Check In: Date Input
Check Out: Date Input
Nights: Calculated; Disabled input

I have error messages and defaults based on upon the user input (e.g check out <> before check in, check in !<= current date).  My problem is that when the user selects the date using the date picker.  As they scroll through the date and try to select a date the application is triggering these messages before they have completed the selection. Is there any way to only trigger these rules once they leave these fields?