>>This doesn't work if the last record happens to be deleted.
>
>In my case it works, we don't delete records, just "cancel" them(field value).
>thanks for help!
In that case, I think there are no additional objections.
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)