- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender{

    if ([segue.destinationViewController isKindOfClass:[OneVC class]]) {

        OneVC *one = segue.destinationViewController;

        one.oneStr = @"i`m one";

    }

    if([segue.destinationViewController isKindOfClass:[TwoVC class]]){

        TwoVC *two = segue.destinationViewController;

        two.twoStr = @"i`m two";

    }

}