Ok, then would you please clarify what you mean by, "It seems that the Grid cannot open the alias again (I thinks because the file is another one). I tried closing the first FILE_YYYY_MM and then opening the next file FILE_YYYY_MM. But nothing."

What happens when you try to open the alias again? Is this the problem with the grid going blank, or is there something else that's going wrong?

>Barbara, thanks for your help, but the recorsource to '' did not worked. I. I tried to Grid.Mygrid.visible=.f. and then Grid.Mygrid.visible=.t. But nothing. Any other idea will be welcome.
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>Carlos Burgos