ios - How do you send data between viewcontrollers that are in different storyboards -

here code in first viewcontroller.m file:

riskviewcontroller *riskvc = [[riskviewcontroller alloc] initwithnibname:nil bundle:[nsbundle mainbundle]]; riskvc.address1 = @"this data im trying send!"; uistoryboard *storyboard = [uistoryboard storyboardwithname:@"main" bundle: [nsbundle mainbundle]]; [self.navigationcontroller pushviewcontroller:[storyboard instantiateviewcontrollerwithidentifier:@"risk"] animated:yes]; 

here code in second viewcontroller.h file:

@interface riskviewcontroller : uiviewcontroller <uitextfielddelegate>  @property (nonatomic, strong) nsstring * address1; 

here code in second viewcontroller.m file. nsloging self.address1 null:

- (void)viewdidload { [super viewdidload]; nslog(@"addy1%@", self.address1); } 

why self.address1 string null, should contain string sent, how fix data gets sent?

uistoryboard *storyboard = [uistoryboard storyboardwithname:@"main" bundle: [nsbundle mainbundle]]; riskviewcontroller *riskvc = [storyboard instantiateviewcontrollerwithidentifier:@"risk"] riskvc.address1 = @"this data im trying send!"; [self.navigationcontroller pushviewcontroller:riskvc animated:yes];