How to implement transition to the next UITextField in the next UITableCell?

Question

iOS

Welcome all.
Given: UIViewController. It has a sign with fields for registration.
In each line of the table, something like this UITextField is written

UITextField * emailField = [[UITextField alloc] initWithFrame:CGRectMake(20, 10, self.view.frame.size.width-40, 30)];
            emailField.placeholder = @"Email";
            emailField.backgroundColor = [UIColor whiteColor];
            emailField.layer.borderColor = [[UIColor grayColor]CGColor];
            emailField.layer.cornerRadius = 7.0;
            emailField.tag = 201;
            emailField.delegate = self;
            emailField.keyboardType = UIKeyboardTypeEmailAddress;
            emailField.returnKeyType = UIReturnKeyNext;
            emailField.textAlignment = NSTextAlignmentCenter;

Well, it's spelled out accordingly.

-(BOOL)textFieldShouldReturn:(UITextField*)textField
{
    NSInteger nextTag = textField.tag + 1;
    UITableViewCell * currentCell = (UITableViewCell *) textField.superview.superview;
    NSIndexPath * currentIndexPath = [self.regTable indexPathForCell:currentCell];
    
    if (currentIndexPath.row != 4) {
        
        NSIndexPath * nextIndexPath = [NSIndexPath indexPathForRow:currentIndexPath.row + 1 inSection:0];
        UITableViewCell * nextCell = (UITableViewCell *) [self.regTable cellForRowAtIndexPath:nextIndexPath];
        
        [self.regTable scrollToRowAtIndexPath:nextIndexPath atScrollPosition:UITableViewScrollPositionMiddle animated:YES];
        
        UITextField *nextResponder = (UITextField *)[self.view viewWithTag:nextTag];
        [nextResponder becomeFirstResponder];
    }
    
    
    return YES;
}

The table will scroll with a bang. But the cursor does not move to the next UITextField. He, as it were, remains in the first (from which they entered)
Thank you.