Erel said not too long ago that he was planning on implementing some kind of global space where modules could share sub's. I personally thought Sub Process_Globals could share variables between modules, as shown in the excerpt below...
Sub Process_Globals
'These global variables will be declared once when the application starts.
'These variables can be accessed from all modules.
I found the solution in one of the previous threads.
Did you add the prefix Main to the variables in the other activity?
Sub Process_Globals
Dim Var AsDouble
In the other activity.
Main.Var = 1.23
It's the same as with the Modules in B4PPC.
You can also declare process global variables in other activities, then you must add the activity name as the prefix for the variables in other activities.