NSTableView+NSArraController+CoreData

Hello everyone.
I'm looking for some help to figure out something, because I'm already brake
my brain.

We have some NSTableView for example with 1 column (track title)
CoreData model looks similar to this:

  [Track Entity]                            [Playlist Entity]
  NSString *title                           NSString *title
  relationship playlists  <<==>>    relationship tracks
                            many-to-many

Relationship in both entities is to-many.

Via IB (same if via code) I'm bind my NSArrayController (with prepare
content flag and Entity name: Track) to my delegate class which will return
reference on NSManagedObjectContext (of created in init function context).
NSTableColumn is bind to my NSArrayController object with 'controller key' =
'arrangedObjects', 'model key path' = 'title'

Delegate class have IBOutline NSArrayController aController; (bind via IB to
NSArrayController object)

Build, all works great, table view shows my track titles. But when I try to
set filter predicate for aController, which should show tracks from playlist
with provided playlist name.
So I make this:
[aController setFilterPredicate:[NSPredicate predicateWithFormat:@"ANY
playlists.title like[c] %@", @"playlist #1"]];

I'll get an exception:
[<NSComparisonPredicate 0x5d07800> valueForUndefinedKey:]: this class is not
key value coding-compliant for the key title.

What I'm doing wrong? Maybe there is another way to solve this problem?

Thanks,
Sergey Mamontov
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