---
id: fast-element.observationrecord.propertysource
title: ObservationRecord.propertySource property
hide_title: true
---
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[@microsoft/fast-element](./fast-element.md) &gt; [ObservationRecord](./fast-element.observationrecord.md) &gt; [propertySource](./fast-element.observationrecord.propertysource.md)

## ObservationRecord.propertySource property

The source object with an observable property that was accessed.

<b>Signature:</b>

```typescript
propertySource: any;
```