Alternatively, you could use INDIRECT.EXT within the MOREFUNC addin from he

http://xcell05.free.fr/english/index...func_Functions

"muster" wrote:

Thank you all.

My intention at first is getting data from a file that is not opened. I
realised that is probably not feasible. I have to write a function to
do that.

But suppose the file is opened. Now I get my file name in a cell, say
A1, which named "LastFile". What is the correct syntax to reference a
cell in "LastFile"? I can't use explicit file name, because it will
change.

Harlan Grove wrote:
Barb Reinhardt wrote...
In order for this to work, the workbook must be opened. Try

='c:\abc\[june.xls]total'!a1
...

If the workbook were open, the formula

=[june.xls]total!A1

would be sufficient because Excel won't load multiple files with the
same base filename, e.g., june.xls, into memory at the same time.