# appendDie

Wafer map: stream one probe result in (cell upsert; re-tests emit `binChanged`).

Canonical: https://chart.syidax.com/docs/methods/appendDie/

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## Definition

```typescript
appendDie(datum: { col: number; row: number; bin?: number | string; value?: number }): Promise<void>
```

| Arguments | Type | Required |
| --- | --- | --- |
| `datum` | `{ col: number; row: number; bin?: number \| string; value?: number }` | Required |

Return type: `Promise<void>`. Call the method after element registration and await its Promise result.

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## Related charts

- [sy-wafer-map](https://chart.syidax.com/docs/components/wafer-map.md#method-appendDie)