Don't bother using modifier or VB or even Dex. Use extender. I started using it, and basically, its a point and click that allows you to add fields, windows, forms etc to great plains with minimal problems. You can also add to smartlists and create searches too. It also links to core great plains, and posts to GL, RM, PM etc.
Saved a customer US$23000 by using this application instead of dex.