iphone - Fires EXC_BAD_ACCESS -

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hi trying implement captcha functionality. following code, have used generating random word:

-(void) createcaptchaword{         lettersarray = [[nsmutablearray alloc] initwithobjects:@"a",@"b",@"c",@"d",@"e",@"f",@"g",@"h",@"i",@"j",@"k",@"l",@"m",@"n",@"o",@"p",@"q",@"r",@"s",@"t",@"u",@"v",@"w",@"x",@"y",@"z", nil];         randomword = @"";      for(nsuinteger i=0;i<5;i++){         nsuinteger randomnumber = arc4random()%[lettersarray count];         randomword = [randomword stringbyappendingstring:[lettersarray objectatindex:randomnumber]];         //randomword = [nsstring stringwithformat:@"%@%@",randomword,[lettersarray objectatindex:randomnumber]];     }      nsstring *captchaurl = [nsstring stringwithformat:@"%@%@",commonfunctions.captchaimgurl,randomword];     uiimage *captchaimage = [[uiimage alloc] initwithdata:[nsdata datawithcontentsofurl:[nsurl urlwithstring:captchaurl]]];      [captchaimgview setimage:captchaimage]; }

the problem variable randomword. can access variable inside method named "createcaptchaword". there function save information entered. in method, when tried access variable "randomword", got exception exc_bad_access. enabled nszombie. got following message in console:

-[cfstring respondstoselector:]: message sent deallocated instance 0x4656c10

can me solve issue.

regards, sreelash

you have retain value assigned randomword variable either using retain or setter method (when it's property) self.randomword = ...


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