This is the third reply. I added ' ' and ',' to the
criteria and I was able to filter the data properly.
Thank you for the help.

>Use this instead:
>select * from test where iif(empty(x),.t.,f1$x)
>select * from test where iif(x='none',.t.,f1$x)
>
>>Is this normal VFP (7 or 8) Select-SQL behavior?
>>

>>create cursor test (f1 i)
>>for i = 1 to 10
>>	insert into test values (i)
>>endfor
>>x='1,2,3,4,5'
>>*!*	x=''  && uncomment to cause an error
>>select * from test where iif(empty(x),.t.,f1 in (&x))
>>*!*	x='none'  && uncomment to cause an error
>>select * from test where iif(x='none',.t.,f1 in (&x))
>>