I have one main view as shown in picture. I add 2 subviews into that and each has their own view controller. 

In `ipadMainViewController`, 

```
self.dTVC= [[dialoguesTableViewController alloc] initWithNibName:@"dialoguesTableViewController" bundle:nil];
[self.dTVC.view setFrame:rectFordTVC];
[self.view addSubview:self.dTVC.view];

```

After that, I want to remove the view of `dialoguesTableViewController` if I press a button in `CategoriesViewController`. But, I can't remove it. 
In `CategoriesViewController`, I write like this but `dialoguesTableViewController` can't be removed from `ipadMainViewController`. How shall I do this?

In `CategoriesViewController`, I write code like this but it is not working. 

```
self.dTVC= [[dialoguesTableViewController alloc] initWithNibName:@"dialoguesTableViewController" bundle:nil];
[self.dTVC.view removeFromSuperview];

```

![enter image description here](https://i.stack.imgur.com/wIPk3.png)