The easiest way is to add a new Module to your project. Modules are forms without graphics, and their greatest feature is that variables in them that are declared "public" or "friend" are visible in all parts of your project. Thus, create a module (modGlobals is a good name) and put a line like this in it Friend gsMyString as String = Nothing and all of your forms and other modules can access this variable. Hope this will help you.
Regards, Satips.:rose: Don't walk in front of me, I may not follow; Don't walk behind me, I may not lead; Walk beside me, and just be my friend. - Albert Camus