Redirect after Google Authentication Supabase

I have been tried Google Sign-In Supabase for some weeks.
It works for web app but it doesn't work in Android app (not published in Google Play only installed from .apk).

I found the article: https://zerocodeskills.com/flutterflow-supabase-google-authentication/

There is custom action in the end.

.....
Future signInWithGoogle() async {
  await supabase.auth.signInWithOAuth(
    Provider.google,
    redirectTo: kIsWeb ? null : 'com.my.app://login-callback/',   ); }

What should I replace 'com.my.app://login-callback/' on for my app?

My Package Name: com.mycompany.cbtdiary
My Domain: ttps://cbtdiary.flutterflow.app/ (I have no my own domain)
Deep Linking: cbtdiary://cbtdiary.com (is the 2nd part right?)

Thanks.