## getExtensionValue() function [​](/content/docs/sdk/core.getextensionvalue#getextensionvalue-function "Direct link to getExtensionValue(/index.html) function")

Returns an extension value by extension URLs.

**Signature:**

```typescript
export declare function getExtensionValue(resource: any, ...urls: string[]): ExtensionValue | undefined;
```

## Parameters [​](/content/docs/sdk/core.getextensionvalue#parameters "Direct link to Parameters"/index.html)

| Parameter | Type | Description |
| --- | --- | --- |
| resource | any | The base resource. |
| urls | string[] | Array of extension URLs. Each entry represents a nested extension. |

**Returns:**

ExtensionValue | undefined

The extension value if found; undefined otherwise.

- [getExtensionValue() function](/content/docs/sdk/core.getextensionvalue#getextensionvalue-function/index.html)
- [Parameters](/content/docs/sdk/core.getextensionvalue#parameters/index.html)