Global Variables in VUGen

Hi,

I got a problem in declaring global variable in VUGen scripting.

How can I create a global variable that can be unique across all running virtual users.

I tried below ways, but not working.

1. declared a variable in globals.h file 

2. declared static variable  in globals.h file .

in the both cases each VUser having his private set of global variables but not on a shared manner. 

I want to declare a variable similar to VuserID or Iteration Number.... !

How it is possible to declare such kind of variable in VUGen. Solution is really appreciable.

Thanks in advance..!