# updatePoint

Radar-only — patch one category value in a series.

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

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## Definition

```typescript
updatePoint(seriesIdOrIndex: string | number, categoryIdOrIndex: string | number, value: number | null): Promise<boolean>
```

| Arguments | Type | Required |
| --- | --- | --- |
| `seriesIdOrIndex` | `string \| number` | Required |
| `categoryIdOrIndex` | `string \| number` | Required |
| `value` | `number \| null` | Required |

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

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## Related charts

- [sy-radar-chart](https://chart.syidax.com/docs/components/radar.md#method-updatePoint)