# UpdateUserReference

Updates the reference identifier for a specific user based on the user `UUID`. The reference is a custom identifier that can be used to link users to external systems.

{% code overflow="wrap" %}

```cpp
void UpdateUserReference(FString UserId, const FVyUpdateUserReferenceRequest& Params, const FVyOnUpdateUserReferenceComplete& OnComplete) const;
```

{% endcode %}

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**Parameters**

| UserId     | FString                                                                                                                               | The user \`UUID\` whose \*\*reference\*\* you want to update.                           |
| ---------- | ------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------- |
| Params     | [FVyUpdateUserReferenceRequest](https://sdk.venly.io/sdk-reference/ue5-sdk-v3/object-references/wallet/fvyupdateuserreferencerequest) | Parameters for this operation (FVyUpdateUserReferenceRequest)                           |
| OnComplete | FVyOnUpdateUserReferenceComplete                                                                                                      | The callback function called when the user preferences retrieval operation is complete. |

\
**OnComplete Callback** (FVyOnUpdateUserReferenceComplete)\
Contains a [FVyUserReferenceDto](https://sdk.venly.io/sdk-reference/ue5-sdk-v3/object-references/wallet/fvyuserreferencedto) response type