Thank you very much Jean
Actually I've studied programming for 2,3 months.
Recently with Play maker and just a little code stuff, I finished my project.
But problem has occurred when i'm trying to attach InAppBilling stuff.
I finished attaching managed items code with "get property" and "set property".
So when item has been purchased i can get sign from code and lead that value into my playmaker FSM.
but with unmanaged item. Code and setting is done. now i can purchase unmanaged item.
with unmanaged item, which is consumable, i need to get global even to changing playerprefs value.
This is why i'm trying to make let code fire event.
As you advise, i will do research on public var.
Custom action stuff, i'm not sure that i can make it or not.
Anyway, I always thanks to you and playmaker