Local Notification sound not playing?

I'm having this problem with the Local notifications, they are not playing the sound. I tested with the default one and the custom one that is obviously the one I want to play but nothing! I looked and a lot of people face this problem but none of their solutions worked for me.

UILocalNotification *local

- (IBAction)Dateaction:(id)sender {

    local = [[UILocalNotification alloc]init];
    local.timeZone = [NSTimeZone defaultTimeZone];
    local.alertBody = [NSString stringWithFormat:@"%@ Recuerda que tienes que: %@", [[NSUserDefaults standardUserDefaults] objectForKey:@"user"], [[NSUserDefaults standardUserDefaults] objectForKey:@"selected"]];
    local.fireDate = [self.DatePicker date];
   /* if ([[self.userdefaults objectForKey:@"sound"]isEqualToString:@"sound1"]) {
        local.soundName = @"sound1.caf";
    }else if([[self.userdefaults objectForKey:@"sound"]isEqualToString:@"sound2"]){
        local.soundName = @"sound2.caf";
    }else if([[self.userdefaults objectForKey:@"sound"]isEqualToString:@"sound1"]){
        local.soundName = @"sound3.caf";
    }else{
        local.soundName = @"sound1.caf";
    }*/
    local.soundName = UILocalNotificationDefaultSoundName;


}

- (IBAction)switchChanged:(id)sender {
if(self.NotSwith.isOn == YES){
        [[UIApplication sharedApplication] scheduleLocalNotification:local];


       }
}

Might be a comparatively simple solution: can you test if it works in the Simulator? If it works in the Simulator and not in the device I'd suggest making sure the mute switch is not on (spent 4 hours yesterday figuring this out).