If data in B1 to B20, try this in C1, and copy down to C20:
=INDEX($B$1:$B$20,20-(ROW(A1)-1))

Signature
HTH,
RD
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Please keep all correspondence within the NewsGroup, so all may benefit !
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>I need to change the datas from top to bottom position or reverse the
> position of dataset without doing the ascending or descending order of the
> dataset.