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

# Form Fill In

Fill in a form with data.

## Input

| Property       | Type        | Required | Description                            |
| -------------- | ----------- | -------- | -------------------------------------- |
| data           | JSON        | Yes      | The data to be filled in the form.     |
| formTemplateId | SHORT\_TEXT | Yes      | The ID of the Brainbase form template. |
| fontSize       | NUMBER      | No       | The font size for the text.            |

## Sample Output

```json theme={null}
{}
```