iphone - Cocos2d CCMenuItem target gives SIGABRT -

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i'm trying create menu system calls method depending on pressed. problem when add target , selector ccmenuitems.it crashes sgabrt error. know problem target, should be? here .h , .m code

#import "cocos2d.h"  // splashmenulayer @interface splashmenulayer : cclayer { bool menubuttonsshowing; cclabelttf * splashlabel; ccmenuitemfont * puzzlemenuitem; ccmenuitemfont * racemenuitem; ccmenuitemfont * leaderboardmenuitem; ccmenu * mainmenu; }  // returns ccscene contains helloworldlayer child +(ccscene *) scene; -(bool) cctouchbegan:(uitouch *)touch withevent:(uievent *)event; -(void) cctouchended:(nsset *)touches withevent:(uievent *)event; -(void) deletelabel :(id)sender; -(void) puzzlemode:(id)sender; -(void) racemode:(id)sender; -(void) leaderboard:(id)sender;  @property bool menubuttonsshowing; @property (nonatomic, retain) cclabelttf* splashlabel; @property (nonatomic, retain) ccmenuitem* puzzlemenuitem; @property (nonatomic, retain) ccmenuitem* racemenuitem; @property (nonatomic, retain) ccmenuitem* leaderboardmenuitem; @property (nonatomic, retain) ccmenu* mainmenu;  @end

and finally

-(void) cctouchended:(nsset *)touches withevent:(uievent *)event{ if (menubuttonsshowing == no) {     id action = [ccsequence actions:[ccfadeout actionwithduration:0.5],[cccallfunc actionwithtarget:self selector:@selector(deletelabel:)], nil];     [splashlabel runaction:action];  //create menu items , target/selector     puzzlemenuitem = [ccmenuitemfont itemfromstring:@"puzzle mode" target:self selector:@selector(puzzlemode:)];     racemenuitem = [ccmenuitemfont itemfromstring:@"race mode" target:self selector:@selector(racemode:)];     leaderboardmenuitem = [ccmenuitemfont itemfromstring:@"leaderboard" target:self selector:@selector(leaderboard:)];  //add menu items menu     mainmenu = [ccmenu menuwithitems:puzzlemenuitem, racemenuitem, leaderboardmenuitem, nil];     [mainmenu alignitemsvertically];     mainmenu.position = ccp(240, 100);       [self addchild:mainmenu];     } }  -(void) puzzlemode:(id)sender{ nslog(@"lol1"); } -(void) racemode:(id)sender{     nslog(@"lol2"); } -(void) leaderboard:(id)sender{     nslog(@"lol3");

}

correct line capital l

leaderboardmenuitem = [ccmenuitemfont itemfromstring:@"leaderboard" target:self selector:@selector(leaderboard:)];

to

     leaderboardmenuitem = [ccmenuitemfont itemfromstring:@"leaderboard" target:self selector:@selector(leaderboard:)];

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