Use the concatenated address in conjunction with the INDIRECT
function.

Hope this helps.

Pete

On Sep 13, 10:56 am, theadore
wrote:
I am trying to use a formula to look up weekly figures. Unfortunately the
figures that I need to use are across daily workbooks.

I have created the required reference in a cell using CONCATENATE but when i
try to link to this in the LOOKUP formula it treats the contents as text
rather than a reference.

any ideas?