---
title: HKPredicateKeyPathSourceRevision
framework: healthkit
role: symbol
role_heading: Global Variable
path: healthkit/hkpredicatekeypathsourcerevision
---

# HKPredicateKeyPathSourceRevision

The key path for accessing the object’s source revision inside a predicate format string.

## Declaration

```swift
let HKPredicateKeyPathSourceRevision: String
```

## See Also

### Device and source keys

- [HKPredicateKeyPathDevice](healthkit/hkpredicatekeypathdevice.md)
- [HKPredicateKeyPathSource](healthkit/hkpredicatekeypathsource.md)