> For the complete documentation index, see [llms.txt](https://docs.makerobos.com/chatman-enterprise-whatsapp-platform/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.makerobos.com/chatman-enterprise-whatsapp-platform/chatman-functions/journeys/utility-cards/custom-script.md).

# 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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