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I'm trying to develop a procedure that allows me to insert events on the google calendar.
The procedure seems to work well. The event on the calendar is created but I can not, however, set a reminder different from the default one.

This is my procedure:

 public string writeOnCalendar(
 string _ClientId
 , string _ClientSecret
 , string _Summary
 , string _Location
 , System.DateTime start_dateTime
 , string start_timeZone
 , System.DateTime end_dateTime
 , string end_timeZone
 , string _Email
 ) 
 try
 
 var r1 = new Google.Apis.Calendar.v3.Data.EventReminder Method = "popup", Minutes = 7 ;
 var r2 = new Google.Apis.Calendar.v3.Data.EventReminder Method = "popup", Minutes = 9 ;
 var erd = new Google.Apis.Calendar.v3.Data.Event.RemindersData UseDefault = false, Overrides = new[] r1, r2 ;

 string[] Scopes = Google.Apis.Calendar.v3.CalendarService.Scope.Calendar ;
 Google.Apis.Calendar.v3.Data.Event myEvent = new Google.Apis.Calendar.v3.Data.Event
 
 Summary = _Summary,
 Location = _Location,
 Reminders = erd,
 Start = new Google.Apis.Calendar.v3.Data.EventDateTime()
 
 DateTime = start_dateTime,
 TimeZone = start_timeZone
 ,
 End = new Google.Apis.Calendar.v3.Data.EventDateTime()
 
 DateTime = end_dateTime,
 TimeZone = end_timeZone
 ,
 //Recurrence = new System.String[] 
 // "RRULE:FREQ=WEEKLY;BYDAY=MO"
 //,
 Attendees = new System.Collections.Generic.List<Google.Apis.Calendar.v3.Data.EventAttendee>()
 
 new Google.Apis.Calendar.v3.Data.EventAttendee() Email = _Email 
 ,
 ;
 Google.Apis.Auth.OAuth2.ClientSecrets cs = new Google.Apis.Auth.OAuth2.ClientSecrets
 
 ClientId = _ClientId,
 ClientSecret = _ClientSecret
 ;
 string ApplicationName = "Google Calendar API .NET Quickstart";
 //Path where Json File is stored
 Google.Apis.Util.Store.FileDataStore store = new Google.Apis.Util.Store.FileDataStore(System.Web.HttpContext.Current.Server.MapPath("~/public/calendar-dotnet-quickstart.json"), true);
 Google.Apis.Auth.OAuth2.UserCredential credential = Google.Apis.Auth.OAuth2.GoogleWebAuthorizationBroker.AuthorizeAsync(cs, Scopes, "user", System.Threading.CancellationToken.None, store).Result;
 var service = new Google.Apis.Calendar.v3.CalendarService(new Google.Apis.Services.BaseClientService.Initializer()
 
 HttpClientInitializer = credential,
 ApplicationName = ApplicationName,
 );
 Google.Apis.Calendar.v3.EventsResource.InsertRequest request = service.Events.Insert(myEvent, "primary");
 request.SendNotifications = true;
 Google.Apis.Calendar.v3.Data.Event createdEvent = request.Execute();


 System.Web.HttpContext.Current.Response.Write(createdEvent.Status + "<br />");
 System.Web.HttpContext.Current.Response.Write(createdEvent.Id + "<br />");
 foreach (var r in createdEvent.Reminders.Overrides)
 
 System.Web.HttpContext.Current.Response.Write(" mins: " + r.Minutes + "<br />");
 
 return "";
 
 catch (System.Exception ex)
 
 System.Web.HttpContext.Current.Response.Write(ex.ToString());
 return ex.ToString();
 

And this is my call to the procedure

writeOnCalendar(
 "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx.apps.googleusercontent.com"
 , "xxxxxxxxxxxxxxxxxxxxxxxx"
 , "Lorem ipsum dolor sit amet"
 , "via tito speri 8"
 , new DateTime(2019, 2, 24, 15, 30, 0)
 , "America/Los_Angeles"
 , new DateTime(2019, 2, 24, 20, 30, 0)
 , "America/Los_Angeles"
 , "f.chiavistrelli2@gmail.com"
 )
 );

Reading the page debugging it seems that everything went well

confirmed

97d33nj9so2jco7l1rgva64n50

mins: 7

mins: 9

However, only the default 30 minute reminder is shown on the calendar.
calendar result

I tried and tried again. What am I doing wrong?