# Custom Script

Custom Script card allows you to execute custom code like Facebook or Google conversation or re-marketing script whitch need to be executed upon completion of specific task like lead conversation or creating pure intent custom audience.

## Using Custom Script

* You need to enter the code that you want to run in the box. The code should be valid and compatible with the service that you want to integrate with. You can use variables, functions, or expressions in your code. 

For example, you can enter this code in the box to send a Facebook pixel event when the customer completes a purchase:

```javascript
// Some code

fbq('track', 'Purchase', {
  value: {{purchase_amount}},
  currency: {{purchase_currency}},
  content_ids: {{product_ids}},
  content_type: 'product'
});

```

<figure><img src="/files/tpu1ERfGoFOlsfF55aLy" alt=""><figcaption></figcaption></figure>


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# 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.makerobos.com/chatman-enterprise-whatsapp-platform/chatman-functions/journeys/utility-cards/custom-script.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.