I expect everyone gave up before this chapter as there are no topics and no errata. I attempted it but as always there are errors and problems.
The obvious error is the coding in the Try It Out, section 7 and the full code listing where a For loop ends with an End For instead of a Next.
The problem is that when I try and ru the code I get an exception thrown when trying to convert the PersoBirthDate expression.

I think I'll give up now and try and find a better book.