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# updateGlobalData

> Set or update key-value pairs in the global session data.

[functionresult]: /docs/server-sdks/reference/typescript/agents/function-result

Set or update key-value pairs in the global session data. Global data persists
for the entire agent session and is accessible in prompt variable expansion
(`${global_data.key}`) and by all SWAIG functions.

## **Parameters**

**`data`** `Record<string, unknown>` — required

Object of key-value pairs to merge into the global data store. Existing
keys are overwritten; new keys are added.

---

## **Returns**

[`FunctionResult`][functionresult] -- `this`, for chaining.

## **Example**

```typescript {4}
import { FunctionResult } from '@signalwire/sdk';

const result = new FunctionResult('Data updated.')
  .updateGlobalData({ customer_name: 'John', status: 'verified' });
```

> Set or update key-value pairs in the global session data.