Well I am 71 next week. :-)
Unless you know what those values are, it is hard to decipher the issue.
Walking your code line by line would also help.

If you are going to require help privately, then I will step away, as I will not know the state of play. Plus that assistance helps no-one but you, which is not really what forums are for, in my mind at least.
I will leave you to it.