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# maximumCount

The maximum number of heartbeats you can add to the sample.

```
class var maximumCount: Int { get }
```

## Discussion

After reaching the maximum count, any attempt to call the [`addHeartbeatWithTimeInterval(sinceSeriesStartDate:precededByGap:completion:)`](/documentation/HealthKit/HKHeartbeatSeriesBuilder/addHeartbeatWithTimeInterval(sinceSeriesStartDate:precededByGap:completion:)) method fails.

---

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