Main thing to ensure is that all ranges are the same size, albeit there is
an exception to that when using TRANSPOSE to flip a range when testing
against each of the elements. You also cannot use whole column references
in your formulas.

--
Regards
Ken....................... Microsoft MVP - Excel
Sys Spec - Win XP Pro / XL 97/00/02/03

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It's easier to beg forgiveness than ask permission :-)
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