I am learning a cocos2d based Game template tutorial from here and now I am at this point of the tutorial. My question is, how can i run 30 different scenes in 30 different levels of 5 chapter? Now I am using this

switch (gameData.selectedLevel) {

    case 1:

    [SceneManager goChapter1Level1Scene];

    break;

    (... snip a whole lot of lines...)

    case 30:

    [SceneManager goChapter5Level6Scene];

    break;

    default: break;

}

in the "- (void) onPlay: (CCMenuItemImage*) sender" method. But it work only for 6 levels scene of chapter1. Other 4 chapters levels are show as same as 1st chapter levels scene. they are not show their own level scene. can any one please teach me, how can I do this stuff using this game template?