How to show or update App icon badge in react native

I have created Native Module for showing or updating count on badge. No error is showing but badge is not showing. Below is code

Notification notification = new NotificationCompat.Builder(getReactApplicationContext(), “CHANNEL_1”)
.setContentTitle(“New Messages”)
.setContentText(“You’ve received " + count + " new messages.”)
.setNumber(count)
.build();