---
title: leftItemsSupplementBackButton
framework: uikit
role: symbol
role_heading: Instance Property
path: uikit/uinavigationitem/leftitemssupplementbackbutton
---

# leftItemsSupplementBackButton

A Boolean value that indicates whether the left items display in addition to the Back button.

## Declaration

```swift
var leftItemsSupplementBackButton: Bool { get set }
```

## Discussion

Discussion Normally, the presence of custom left bar button items causes the Back button to be removed in favor of the custom items. Setting this property to true causes the items in the leftBarButtonItems or leftBarButtonItem property to be displayed to the right of the Back button — that is, they’re displayed in addition to, not instead of, the Back button. When set to false, the items in those properties are displayed instead of the Back button. The default value of this property is false. The value in the hidesBackButton property still determines whether the Back button is actually displayed.

## See Also

### Getting and setting properties

- [prompt](uikit/uinavigationitem/prompt.md)