---
title: keySequenceDataIndexFormat
framework: coreservices
role: symbol
role_heading: Instance Property
path: coreservices/uckeysequencedataindex/1390357-keysequencedataindexformat
---

# keySequenceDataIndexFormat

An unsigned 16-bit integer identifying the format of the UCKeySequenceDataIndex structure. Set to kUCKeySequenceDataIndexFormat.

## Declaration

```swift
var keySequenceDataIndexFormat: UInt16
```