- (void)participateIn:(NSString *)experiment onChoose:(void(^)(NSString *chosenAlternative))block;

[iBlackStone]

[Sixpack participateIn:MY_EXPERIMENT onChoose:^(NSString *chosenAlternative) {

    [aView setTitle:chosenAlternative forState:UIControlStateNormal];
    if ([chosenAlternative isEqualToString:OPTION_A]) {
        aView.backgroundColor = [UIColor blackColor];
    } else if ([chosenAlternative isEqualToString:OPTION_B]) {
        aView.backgroundColor = [UIColor redColor];
    }
}];

when I use like this,I found the chosenAlternative is not the value which server tell me? I guess - (void)participateIn's block isn't calling in the currect time.Any ideas?

[staminajim]

Hi @StoneStoneStone , sorry this post slipped through the gaps. Had you called setupExperiment for the experiment in question before hand on application launch?