Almost. If the Weights.xls book is open, you can use the INDIRECT function:
syntax: INDIRECT(address_string)
with <address_String>: [book_name]sheet_name!range_address_or_name
So something like
ISNA(VLOOKUP($X996
, INDIRECT("[Weights.xls]worksheet_name!w" & C5 & "s")
,3,FALSE) )
--
Regards,
Sébastien
<
http://www.ondemandanalysis.com>
Stephen said:
Is is possible to say
=IF(ISNA(VLOOKUP($X996,Weights.xls!w"VALUE IN CELL C5"s,3,FALSE))
?