I have a game and I want to send event every time user sets new high score, I check if current score is > that previous and if it is I send that new high score to firebase. code
I have same problem, and after reading documentation I found this:
https://firebase.google.com/docs/analytics/android/events#log_events
Custom parameters: Custom parameters are not represented directly in your Analytics reports, but they can be used as filters in audience definitions that can be applied to every report. Custom parameters are also included in data exported to BigQuery if your app is linked to a BigQuery project.