how to send game score after ending the game via bluetooth

i implemented Trivia game for both iphone/iPad when user completes the game i am sending score to the opponent.i am not getting correct result won/loose .if i am playing the game simultaneously both users i am getting correct result who won/loose the game .
how to resolve this issue can any one suggest me .i implemented bluetooth option via Gamekit API

 - (void)receiveData:(NSData *)data fromPeer:(NSString *)peer inSession: (GKSession *)session context:(void *)context
 {
     //Convert received NSData to NSString to display
     NSString *whatDidIget = [[NSString alloc] initWithData:data encoding:NSASCIIStringEncoding];
 
 
 
     //Dsiplay the fart as a UIAlertView
 
   int abc=[whatDidIget integerValue];
 
     if(a>abc)
     {
     UIAlertView *alert55 = [[UIAlertView alloc] initWithTitle:@"Apponent Score:looser" message:whatDidIget delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
     [alert55 show];
     [alert55 release];
     [whatDidIget release];
     }
     else {
         UIAlertView *alert55 = [[UIAlertView alloc] initWithTitle:@"Apponent Score:Win" message:whatDidIget delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
         [alert55 show];
         [alert55 release];
         [whatDidIget release];
     }
 }
 

button clicking code

- (void) sendASilentAssassin{
     // Making up the Silent Assassin :P
     NSString *silentAssassin = @"Puuuuuuuusssssssssssssssss";
 
     // Send the fart to Peers using teh current sessions
     [triviaSession sendData:[displayLiveScore.text dataUsingEncoding: NSASCIIStringEncoding] toPeers:triviaPeers withDataMode:GKSendDataReliable error:nil];
 
 }
 

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