Bob also changed your formulas (in case you missed that).

If you put the equivalent formula in cells on a that worksheet, do they all work
ok?

I'm wondering if you have errors in one of those ranges.



DTM wrote:

Thanks Bob, you are of course right, I forgot to define those
variables...
I have made the suggested change now...
However I am still getting Runtime error '13 Type mismatch... I think
my problem is more fundamental.

--

Dave Peterson