# Narrative Design Trigger

{% hint style="info" %}
Before proceeding with this section, it is advisable to familiarize yourself with the Narrative Design system, as elucidated in this [tutorial](https://youtu.be/C0JdmBTmZ9g?si=dImNu2-fBwKW1Frx).
{% endhint %}

## Use of Invoke Narrative Design Trigger in Unreal Engine. 

1. Develop the logical flow for your specific use case. In this instance, we have created a simple museum tour guide scenario.

<figure><img src="/files/2HNZEMDPZRdiEZIjl9Ri" alt=""><figcaption></figcaption></figure>

1. Once the logic is decided we can move to Unreal Engine. (In this guide we will use the same setup described in this [<mark style="color:green;">guide</mark>](/api-docs/plugins-and-integrations/unreal-engine/guides/event-aware-convai-characters.md))
2. Our goal is to invoke the trigger `Start Tour` in the narrative Design graph, using the `Invoke Narrative Design Trigger` .
3. The `Trigger Name` in  the function should be the same as  the `Trigger` name on the graph.

<div align="left"><figure><img src="/files/oaZmpikvdExoORDoWmo2" alt="" width="343"><figcaption><p>Website</p></figcaption></figure> <figure><img src="/files/Kywt6Hm1IND0Acb1vwDp" alt=""><figcaption><p>Unreal Engine</p></figcaption></figure></div>

3. The above example showcased only one Trigger. The use of more than one Trigger is also possible based on execution logic.&#x20;


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.convai.com/api-docs/plugins-and-integrations/unreal-engine/guides/narrative-design/narrative-design-trigger.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.