How to send Push Notification to all users of my app in Firebase Cloud Messaging using Flutter(Dart)

I already install my application in two devices, first is my Emulator AVD and Second is my personal smartphone, but, when i click in New Message in Firebase Cloud Messaging, and generate Message, only my emulator receive the Push Notification, my personal Smartphone did not receive, how i do to send the push notifications to all users of my application?