StartBroadcast from NotificationAlertReceiver not firing

Hey folks, I a problem. I want do send a Broadcast from my NotificationAlertReceiver. Here's some code i found on the net, which works fine except that the intent is not being sent. `using System.Linq; using System.Text; using Android.App; using Android.Content; using Android.OS; using Android.Runtime; using Android.Views; using Android.Widget; using Android.Util;

namespace Test_Android { [BroadcastReceiver] class NotificationAlertReceiver : BroadcastReceiver {

    public NotificationAlertReceiver()
    {

    }

    public override void OnReceive(Context context, Intent intent)
    {
        PowerManager pm = (PowerManager)context.GetSystemService(Context.PowerService);
        PowerManager.WakeLock w1 = pm.NewWakeLock (WakeLockFlags.Partial, "NotificationReceiver");
        w1.Acquire ();

        var broadcastIntent = new Intent();
        broadcastIntent.SetAction("com.mypackagename.StartChecking");
        context.SendBroadcast(broadcastIntent);

        Android.Widget.Toast.MakeText (context, "OnReceive", Android.Widget.ToastLength.Short).Show ();


        w1.Release ();
    }

    public void CancelAlarm(Context context){ 
        Intent intent = new Intent(context, this.Class);
        PendingIntent sender = PendingIntent.GetBroadcast (context, 0, intent, 0);
        AlarmManager alarmManager = (AlarmManager) context.GetSystemService (Context.AlarmService);
        alarmManager.Cancel (sender);
    }

    public void SetAlarm(Context context, int alertTime){
        long now = SystemClock.ElapsedRealtime();
        AlarmManager am = (AlarmManager) context.GetSystemService (Context.AlarmService);
        Intent intent = new Intent(context, this.Class);
        PendingIntent pi = PendingIntent.GetBroadcast (context, 0, intent, 0);
        am.Set (AlarmType.ElapsedRealtimeWakeup, now + ((long)(alertTime)), pi);
        //Android.Widget.Toast.MakeText (context, "SetAlarm", Android.Widget.ToastLength.Short).Show ();
    }
}

}`

The toast "OnReceive" is being shown, but the intent is not going out. Any idea on what I'm doing wrong? Help would be really much appreciated. greets xsx