Android : notify by suitable notifications type according to the device SDK

I want to notify the user when message arrived, I used two types of notifications,(New: supported by >=4.1), and the other type is for older device, I write a condition to check the device SDK version and notify by the suitable notyfication type:

if(Build.VERSION.SDK_INT>=4.1) {
 Notification notification = new Notification.Builder(context)
         .setContentTitle("new message from" + msg.getString(ConstantsGCM.NAME_CLM))
         .setContentText(msg.getString(ConstantsGCM.BODYCLM))
         .setSmallIcon(icon)
         .setLargeIcon(bm)
         .setAutoCancel(true)
         .setWhen(when).setVibrate(viber)
         .setContentIntent(contentIntent)
         .build();

 if (EntryActivity.useSound.equals("yes"))
     if (!ring.equals(""))
         notification.sound = (Uri.parse(ring));
     else notification.defaults = Notification.DEFAULT_SOUND;
 mNotificationManager.notify(110, notification);
 }else { //old type..
 NotificationCompat.Builder mBuilder =
         new NotificationCompat.Builder(this)
                 .setSmallIcon(R.drawable.newlogo)
                 .setContentTitle("new message from" + msg.getString(ConstantsGCM.NAME_CLM))
                 .setContentText(msg.getString(ConstantsGCM.BODYCLM))
                 .setContentIntent(contentIntent)
                 .setLargeIcon(bm)
                 .setAutoCancel(true)
                 .setWhen(when);

 if (EntryActivity.useSound.equals("yes"))
     if (!ring.equals(""))
         mBuilder.setSound(Uri.parse(ring));
     else mBuilder.setDefaults(Notification.DEFAULT_SOUND);


 mNotificationManager.notify(110, mBuilder.build());
 }

but In older devices the notifications don't work at all! Any help? point: no errors, no exceptions, just the notification doesn't apeare!