How can i make a Notification for a user signup?

[slow sparrow]

Hello! I'd like to have a notification for when a user creates an account. what i have right now is a notification for user_write. this gives me the notifications i want, but it also includes whenever a user writes anything to their account and saves it. i'd like to be able to filter to show only those events with "Created: True"... how can i do that?

[slow sparrow]

here's the notification rule

and here's the policy bound to that

as you can see, its already mostly set up, i just need to somehow filter for only "created = true"