B4J Question ABMaterial Support for FireBase

' in your class Initialize add
page.AddExtraJavaScriptFile("https://www.gstatic.com/firebasejs/7.22.1/firebase-app.js")
page.AddExtraJavaScriptFile("https://www.gstatic.com/firebasejs/7.22.1/firebase-database.js")
page.AddExtraJavaScriptFile("myfirebase.js") ' to hold our global javascript variables and some functions if needed

' in ConnectPage()
Dim script as String = $"
const firebaseConfig = {
  apiKey: "AIzaSyCGQ0tYppWFJkuSxBhOpkH0xVDmX245Vdc",
  authDomain: "project-id.firebaseapp.com",
  databaseURL: "https://project-id.firebaseio.com",
  projectId: "project-id",
  storageBucket: "project-id.appspot.com",
  messagingSenderId: "637908496727",
  appId: "2:637908496727:web:a4284b4c99e329d5",
  measurementId: "G-9VP01NDSXJ"
};
firebase.initializeApp(config);

database = firebase.database();
"$

Page.ws.Eval(script, null)
Page.ws.Flush

var database;

function writeUserData(userId, name, email, imageUrl) {
  firebase.database().ref('users/' + userId).set({
    username: name,
    email: email,
    profile_picture : imageUrl
  });
}

b4j_raiseEvent('page_parseevent', {'eventname': 'page_youreventlowercased','eventparams':'yourparam1, yourparam2',yourparam1': value1, 'yourparam2': value2});

Sub Page_YourEventNameLowerCased(yourParam1 as String, yourParam2 as int)
  ' here you can do stuff and for example call one of the javascript methods:
dim script as String = $"
writeUserData(15, "Alain", "alain@mail.com", "http://domain.com/myimage.jpg");
"$
Page.ws.Eval(script, Null)
Page.ws.Flush
End Sub

Sub Page_YourEventNameLowerCased(params as Map)
    Dim yourParam1 as String = params.Get("yourparam1") ' Lowercased!
    Dim yourParam2 as Int = params.Get("yourparam2") ' Lowercased!
    Dim yourParam3 as String = params.Get("yourparam3") ' Lowercased!
End Sub