Yes thanks to you both, now fixed, just wasnt using INDIRECT quite right

"Don Guillett" wrote:

Did you see Bernard's?

--
Don Guillett
Microsoft MVP Excel
SalesAid Software

"AMH" wrote in message
...
Hi Don,


I've used INDIRECT before to produce text strings, however I couldnt
workout
from the help text how to use it within the formula I listed, I tried this


=VLOOKUP(O2,INDIRECT("O1")*A4:L3000,12,FALSE)

where O1 contains the tab name I want to refer to, but this didnt work


"Don Guillett" wrote:

Have a look in the help index for
INDIRECT

--
Don Guillett
Microsoft MVP Excel
SalesAid Software

"AMH" wrote in message
...
I have a formula that looks up data in a sheet using Vlookup, every week
the
formula changes as the week number changes.

The tab to look for data has a tab name of wk## and thus the forumla
for
week 28 looks like this

=VLOOKUP(O2,wk28!A4:L3000,12,FALSE)

How can I substitue the wk28 tab number in the formual for a cell
reference
that contains the text "wk28" ?

This will save me modifying forumlas on weekly basis.

Thanks