UITextView Delegate shouldChangeTextInRange (or any over) doesn't get called

I need to track changes in my UITextView method (actianly for limiting number of lines), but none of UITextViewDelegate methods are being called when editing in UITextView begins. Not even - (void)textViewDidChange:(UITextView *)textView;

I dont know what Im doing wrong

I added UITextViewDelegate method to header file like that:

@interface PirmasViewController : UIViewController <UITextViewDelegate, MFMa......

And I put any methods for tracking changes in my implementation file:

- (void)textViewDidChange:(UITextView *)textView{NSLog(@"something changed");}

- (BOOL)textView:(UITextView *)aTextView shouldChangeTextInRange:(NSRange)aRange replacementText:(NSString*)a开发者_开发百科Text{ NSLog(@"something changed"); return YES; }`

but no rezults.

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I was missing one line of code:

UITextViewFieldName.delegate = self;