# Tutorials 2 Checklist pages 169 exercise

**URL:** <https://forums.kodeco.com/t/tutorials-2-checklist-pages-169-exercise/24955>\
**Category:** iOS Apprentice\
**Created:** [January 8, 2017, 4:41pm UTC](https://forums.kodeco.com/t/tutorials-2-checklist-pages-169-exercise/24955 "2017-01-08T16:41:30Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![qwerty007](https://s3.amazonaws.com/cdn.raywenderlich.com/community/forum-assets/noun-game-ghost-878668.png) [@qwerty007](https://forums.kodeco.com/u/qwerty007)\
**Post date:** [January 8, 2017, 4:41pm UTC](https://forums.kodeco.com/t/tutorials-2-checklist-pages-169-exercise/24955/1 "2017-01-08T16:41:30Z")

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Hi,  
in the Checklist tutorial page 169 exercise, I set the storyboard id of List detail view,intead of the navigation controller view,here is my code:  
`let controller = storyboard!.instantiateViewController(withIdentifier: "ListDetailViewController") as! ListDetailViewController controller.delegate = self let checklist = lists[indexPath.row] controller.checklistToEdit = checklist present(controller, animated: true, completion: nil)`  
and this code works, but I don’t understand why the tutorials use the navigation controller’s storyboard id.  
help me. pls  
thanks.

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**Author:** ![hollance](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/hollance/32/109009_2.png) [@hollance](https://forums.kodeco.com/u/hollance)\
**Post date:** [January 10, 2017, 9:13am UTC](https://forums.kodeco.com/t/tutorials-2-checklist-pages-169-exercise/24955/2 "2017-01-10T09:13:46Z")

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Does this screen have a navigation bar when you open it?

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<div class="post-metadata">

**Author:** ![qwerty007](https://s3.amazonaws.com/cdn.raywenderlich.com/community/forum-assets/noun-game-ghost-878668.png) [@qwerty007](https://forums.kodeco.com/u/qwerty007)\
**Post date:** [January 10, 2017, 2:43pm UTC](https://forums.kodeco.com/t/tutorials-2-checklist-pages-169-exercise/24955/3 "2017-01-10T14:43:43Z")

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Ok,thanks your help. I test this code, but forget checking edit checklist view.😅, I think I understand it.