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

## ObservationRecord.propertyName property

The name of the observable property on [ObservationRecord.propertySource](./fast-element.observationrecord.propertysource.md) that was accessed.

<b>Signature:</b>

```typescript
propertyName: string;
```