seek position problems

Here is some issues i have found with VLCMediaPlayer

position value issue

position's value of VLCMediaPlayer doesn't change after setting

   NSLog(@"pre position:%.2f",self.player.position); //we suppose it's 0.1
   self.player.position = 0.5; // then i set it to 0.5
   NSLog(@"now position is %.2f",self.player.position); //it's still 0.1, but it should be 0.5

VLCMediaPlayerDelegate issue

after setting a new value with position, i need to know wether it successfully set and when it is updated.

i found the only delegate method got invoked is

- (void)mediaPlayerStateChanged:(NSNotification *)aNotification

and it may be invoked for many times after a single position value setting with the same player's state which is always VLCMediaPlayerStateBuffering along with the same time and position values during those invokes.

I think it would be much better to invoke the other delegate method

- (void)mediaPlayerTimeChanged:(NSNotification *)aNotification

after the seeking position is updated, in this case i will know when the position setting is updated