how to declare global variable and check number of instances of a form

Hi I have started using VB.net just recently.

I am trying to implement a global variable that can be called by different forms , may i know how do i do that ?

And is there any way to detect how many instances of a particular form class is instantiated ?

Thank you =):D

You can still add a Module to your project (on the Project menu) and declare any variable there as Public.

Thank you very much =) :)