Hi,

The correct syntax is

=SUM(Sheet1:Sheet3!A1)

Substitute sheet1 & sheet3 for the first/last sheets in the range you want
to sum
--
Mike

When competing hypotheses are otherwise equal, adopt the hypothesis that
introduces the fewest assumptions while still sufficiently answering the
question.


"Espen Rostad" wrote:

How can I collect data from cell A1 on sheet 01.01 thru 31.12 (Dates) to
summary sheet?

I've tried fill and copy formula with different use of ! and $ but I've not
been able to solve this by my self.

Thank you