Hi all:
I have a program that searches for a [CODENUMBER] and then checks the value of the [BARCODE] field. I want some action taken if the field is .NULL. I know the field is .NULL. because that is how it shows in the field and i can see that value in a debug window. However, the line
If BARCODE = .NULL.
doesn't evaluate as true. Why?

Also, this two empty strings:
" " and "" aren't the same? Why?

Thank you in advance.

Ulises