Chris Cullen wrote:

smartin: Thanks for replying. I think your reply might be easier but there
are a lot of concepts you are using that I do not understand (ie <). The
first reply was simpler and it worked so I will use that for now. You are
right - the nested functions are (to me) long and a PITA but I do not have
any skills to bypass them yet.

Again, thanks for replying.

No worries, glad you got it sorted out.

For future reference, "<" means "not equal".