> ## Documentation Index
> Fetch the complete documentation index at: https://docs.ag2.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# autogen.UpdateSystemMessage

<h2 id="autogen.UpdateSystemMessage" class="doc doc-heading">
  <code class="doc-symbol doc-symbol-heading doc-symbol-class" />

  <span class="doc doc-object-name doc-class-name">UpdateSystemMessage</span>
</h2>

```python theme={null}
UpdateSystemMessage(content_updater: Callable | str)
```

Update the agent's system message before they reply

<b>Parameters:</b>

| Name              | Description               |
| ----------------- | ------------------------- |
| `content_updater` | **Type:** Callable \| str |

### Instance Attributes

<code class="doc-symbol doc-symbol-heading doc-symbol-attribute" />

#### content\_updater

<br />

<br />