> ## Documentation Index
> Fetch the complete documentation index at: https://docs.supernote.com/llms.txt
> Use this file to discover all available pages before exploring further.

# modifyLassoGeometry

> Modify the lasso-selected geometry.

<Note>
  You must create a lasso selection before calling this API. The lasso selection must contain exactly one geometry; otherwise the call fails.
</Note>

```ts wrap theme={null}
static modifyLassoGeometry(geometry: Geometry): Promise<APIResponse<boolean>>;
```

**Parameters**

| Parameter  | Type                                                            | Description   |
| ---------- | --------------------------------------------------------------- | ------------- |
| `geometry` | [`Geometry`](/en/api-reference/supernote-plugin/types/geometry) | Geometry data |

**Returns**

* [`APIResponse<boolean>`](/en/api-reference/supernote-plugin/types/api-response):
  `result === true` indicates the modification succeeded

## Example

```ts wrap theme={null}
import { PluginCommAPI, type Geometry } from 'sn-plugin-lib';

/**
 * Example: modify the lasso-selected geometry.
 */
export async function exampleModifyLassoGeometry() {
 const listRes = await PluginCommAPI.getLassoGeometries();
 if (!listRes.success) {
 throw new Error(listRes.error?.message ?? 'getLassoGeometries call failed');
 }

 const geometries = (listRes.result ?? []) as Geometry[];

 if (geometries.length !== 1) {
 throw new Error('Make sure the current lasso selection includes exactly one geometry');
 }
 const first = geometries[0];
 if (!first) {
 return false;
 }

 const res = await PluginCommAPI.modifyLassoGeometry(first);
 if (!res.success) {
 throw new Error(res.error?.message ?? 'modifyLassoGeometry call failed');
 }
 return res.result;
}
```