Passing data from ItemUpdating() to ItemUpdated() in Event Receivers

Hi everybody!

I'm developing sandboxed solutions for SharePoint 365. I just created an Event Receiver and I need to pass some data from ItemUpdating() method to ItemUpdated(). To reach this I tried to make a field(or even a static field) in my Event Receiver class, but it doesn't work correctly when the solution marked as Sandboxed...

Help me please to solve this problem.