Hi

I have a strange problem that I can't work out.

In sheet 1 A1 - A10, I have a list of Surnames.
Sheet 2 to sheet 11 are named according to this list.

(all these sheets have been copied from a Template sheet)

If I use =INDIRECT(a1&"!D20") it doesn't pull the value from the relevant
sheet.

One thing I noticed is that if I manually insert a sheet and reference the
name in the INDIRECT function, the formula works. It doesn't seem to work for
the sheets that have been copied

Any ideas?