[RESOLVED] How to get/throw handler on a Property?

[pourkascheff]

Consider you have a distant measuring UserControl which in its class at first line you've entered

Public Property SI_UNIT As Boolean = True

to manage it through main window, "Form1", to be either Imperial or Metric in calculations. (As a simple question. Of course numeric examples would be better)

1) Is it correct to declare it as "Public"? Why not "Global"? I only know "Private"s which literally means private.
2) (And the whole idea of this thread) How can we get/generate its event-sub when this specific parameter changes?