Thank you,

Alex

>You still have to be carefull with NULL comparison.
>
>>Wow. I did some tests with IF statement, BETWEEN() and SET FILTER TO and was surprised to find that even though the result of comparisons is .NULL. it is treated as NOT .T., so for all practical purposes it behaves as .F. which is appropriate. I expected VFP to give an error in the tests above, and don't know where I got that idea. Did VFP use to give error in previous versions?
>>
>>This data will be used with VB.NET. Do you know if VB.NET behaves is a similar, reasonable, manner?
>>