To clarify for others watching this thread and to remove a wrinkle ..


*- in .Valid use this code

if {input is valid}
return .t. && this passes focus to next object
else
messagebox( ...)
return 0
*- zero is required to avoid talk window of 'Invalid Input' and will
*- not allow focus to leave the object
*- if you use .f. you will still get 'Invalid Input'
endif

See you all at DevCon
Steve