ParentViewController and subview: setting delegate returns null - objective-c

Question

I have a parentViewController and a subView, in viewWillAppear in the parentViewController I added the subview to self.view and I set the delegate of subview to self. When I'm trying to use the delegate in the subview to push another view controller it does't work, I checked the value of delegate and it got "null".
My Main idea: when the user clicks on a button in the subview, I need to push another viewController using the navigationController of the parentViewController.
Here is my code
//parentViewController.h
#import "mysubView.h"
#interface parentViewController : UIViewController <mysubViewDelegate>
.
.//Some properties here
.
#end
In the implementation file:
//parentViewController.m
-(void) viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
mysubView *myView;
//GlobalObjects is to load the file in a certain language
myView = [[GlobalObjects loadNibNamed:#"mysubView" owner:self options:nil] objectAtIndex:0];
//Print myView.delegate gets the correct value here
myView.delegate = self;
[self.view addSubview:myView];
}
.
.
.
-(void)pushViewControllerUsingDelegate:(UIViewController *)viewController
{
[self.navigationController pushViewController:viewController animated:YES];
}
In mysubView.h:
//mysubView.h
#protocol mysubViewDelegate <NSObject>
-(void)pushViewControllerUsingDelegate:(UIViewController *)viewController;
#end
#interface mysubView : UIView< UITableViewDataSource, UITableViewDelegate>
{
}
#property (nonatomic , retain) id <mysubViewDelegate> delegate;
-(IBAction)ButtonClicked:(UIButton *)sender;
#end
In mysubView.m
#implementation mysubView
#synthesize delegate;
.
.
.
-(IBAction)ButtonClicked:(UIButton *)sender
{
newViewController *newController = [[newViewController alloc] initWithNibName:#"newViewController" bundle:nil];
//Here is my problem in this line .. self.delegate is null here
[self.delegate pushViewControllerUsingDelegate:newViewController];
}
-(void)pushViewControllerUsingDelegate:(UIViewController *)viewController
{
[self.delegate pushViewControllerUsingDelegate:viewController];
}
#end

Answer 1

myView = [[GlobalObjects loadNibNamed:#"mysubView" owner:self options:nil] objectAtIndex:0];
Use mysubView instead of GlobalObjects like as below
myView = [[mysubView loadNibNamed:#"mysubView" owner:self options:nil] objectAtIndex:0];
Please use Capital letter when you create new class.this is only convention but you should follow it.