iOS Question How manage toen for push notification

Dim m As Map = CreateMap("to": "token here")

'Non-UI application (console / server application)
#Region  Project Attributes
    #CommandLineArgs:
    #MergeLibraries: True
#End Region

Sub Process_Globals
    Private const API_KEY As String = "AAAA9awD0BQ:APA91bGDh0YT4p9AVQi18x0pufJ63gUedQtzq7nWtqBE9H1VlJHTRWqpmjeWNIeIs_dk0Rcw6LohJIGjdCoE1TPspSGZsLo9kq0qzDKBNheL9uRlQdJozKSRX-DBcQPvuamsAqT_TWBX"
    Private const tokenid As String = "1A796E86FD8BD0DEFA94884C6F96036FD6C65E21B6DA4699DF675C1BB6AEDA00"
End Sub

Sub AppStart (Args() As String)
'    SendMessage("ios_general", "Titolo del Messaggio", "Corpo del Messaggio")
    SendMessage(tokenid, "title", "body")
    StartMessageLoop
End Sub

Private Sub SendMessage(Topic As String, Title As String, Body As String)
    Dim Job As HttpJob
    Job.Initialize("fcm", Me)
'    Dim m As Map = CreateMap("to": $"/topics/${Topic}"$)
    Dim m As Map = CreateMap("to": Topic)
    Dim data As Map = CreateMap("title": Title, "body": Body)
'    If Topic.StartsWith("ios_") Then
        Dim iosalert As Map =  CreateMap("title": Title, "body": Body, "sound": "default")
        m.Put("notification", iosalert)
        m.Put("priority", 10)
'    End If
    m.Put("data", data)
    Dim jg As JSONGenerator
    jg.Initialize(m)
    Job.PostString("https://fcm.googleapis.com/fcm/send", jg.ToString)
    Job.GetRequest.SetContentType("application/json;charset=UTF-8")
    Job.GetRequest.SetHeader("Authorization", "key=" & API_KEY)
End Sub


Sub JobDone(job As HttpJob)
   Log(job)
   If job.Success Then
     Log(job.GetString)
   End If
   job.Release
   ExitApplication '!
End Sub

Private Sub Application_PushToken (Success As Boolean, Token() As Byte)
    If Success Then
        Dim bc As ByteConverter
        Dim j As HttpJob
        Tokenid=bc.HexFromBytes(Token)
        Log("Tokenid: " & Tokenid)
    Else
        Log("Error getting token: " & LastException)
    End If
End Sub

Private Sub GetToken As String
   Dim no As NativeObject
   Dim token As NativeObject = no.Initialize("FIRInstanceID").RunMethod("instanceID", Null).RunMethod("token", Null)
   If token.IsInitialized Then Return token.AsString Else Return ""
End Sub