>>>...
>>>>There' no bug here so there's nothing to explain. Using RECNO() incorrectly doesn't help either.
>>>
>>>Then, is this incorrect ?
>>>

>>>SELECT RECNO() rowNumber FROM myTable
>>>

>>
>>What it has to do with our discussion? Where is UDF() here?
>
>UDF is irrelevant here, however you answer to both
>

>1 is correct this for you ?
>SELECT RECNO() rowNumber FROM myTable
>2 is correct this for you ?
>SELECT UDF(RECNO()) rowNumber FROM myTable
>

It's legit use of RECNO() but it's irrelevant to use of RECNO() inside of UDF().