Show a message when someone awards points

Hello,
Sorry, it is incredible but I'm not able to make this easy thing!
I'd like to show a message to people that award point when submitting a nodetype or a comment like:
"you award 5 points. Now your total points is xxx".
I made a rule:
ON event User was awarded punti
No condition.
Action: Show a configurable message on the site.
here I find the token [user:userpoints] that is the total, but, how can I know how many point the system gives to the user?
thank you.