iphone - Objective c customizing EKEventEditViewController -

i displaying event edit view using code

-(void)editevent:(ekevent *)events{            ekeventeditviewcontroller *addcontroller = [[ekeventeditviewcontroller alloc]  initwithnibname:nil bundle:nil];     addcontroller.delegate = self;     addcontroller.eventstore = [sharedeventstore defaulteventstore];    addcontroller.event = events;  [[nsuserdefaults standarduserdefaults]  objectforkey:kcalendaridentifier]];      addcontroller.editviewdelegate = self;     addcontroller.navigationbar.barstyle = uibarstyledefault;     [self.navigationcontroller presentviewcontroller:addcontroller animated:yes completion:nil];       [addcontroller release];   } 

now requiremet disable title of event in view, mean not want user able edit title of event inside ekeventeditviewcontroller view, can't figure out long time, plz. guide me in thanx , regards.