Enable to find next and previous button of YTPlayerView

Question

I want to change and play youtube video on next and previous button click of YTPlayerView. I'm able to play single video but when But I want to change video on next and previous button click.

I played single video using this below code :

 NSDictionary *playerVars = @{
                                 @"controls" : @1,
                                 @"playsinline" : @1,
                                 @"autohide" : @1,
                                 @"modestbranding" : @1,
                                 @"origin" : @"https://www.example.com",
                                 @"showinfo" : @1
                             };

[self.youtube_playerView loadWithVideoId:@"LlrY456zAMU" playerVars:playerVars];
self.youtube_playerView.delegate=self;

Above code works perfectly. If I'm using this below code for play multiple video, then got an error An error occurred.Please try again letter playback id:LlrY456zAMU and video could not played.:

[self.youtube_playerView loadPlaylistByVideos:@[@"LlrY456zAMU",@"96ReVjMAXEE"]
                                    index:0
                             startSeconds:0
                         suggestedQuality:kYTPlaybackQualityMedium];
[self.youtube_playerView loadWithPlayerParams:playerVars];
self.youtube_playerView.delegate=self;