---
title: dataSource
framework: healthkit
role: symbol
role_heading: Instance Property
path: healthkit/hkliveworkoutbuilder/datasource
---

# dataSource

A data source that provides live data from a workout session automatically.

## Declaration

```swift
var dataSource: HKLiveWorkoutDataSource? { get set }
```

## See Also

### Configuring a live workout builder

- [workoutSession](healthkit/hkliveworkoutbuilder/workoutsession.md)
- [delegate](healthkit/hkliveworkoutbuilder/delegate.md)