>Either in command window, or in form.
>
>It seem release the cursor alias after I use 'Use' to add table?
>Is it a bug or what thing I did wrong?!

Do you issue SELECT 0 before USE? or USE xxx IN 0 ALIAS xxx? USE will kill anything in the current work area. Are you 'USE'ing the same database again? If so, use again with different alias. There's not much info in your question to be able to answer easily.