> ## Documentation Index
> Fetch the complete documentation index at: https://docs.abbyy.com/llms.txt
> Use this file to discover all available pages before exploring further.
# Field
> The Field interface provides access to the field value and its properties.
`Field` provides access to a document field's value, type, structure, and OCR metadata in a Custom activity script.
## Properties
| Name | Type | Access | Description |
| :---------------- | :--------------------------------------------------------------------------------------------------- | :--------- | :------------------------------------------------------------------------------------------------------------------- |
| **Children** | Field\[] | Read-only | Child fields. |
| **DataType** | [DataType](/vantage/documentation/skill-designer/process/custom-activity/data-type) | Read-only | The field data type. |
| **FieldType** | [FieldOcrType](/vantage/documentation/skill-designer/process/custom-activity/field-ocr-type) | Read-only | The field type (for example, text, barcode, or image). |
| **FullName** | string | Read-only | The full path from the document root. Parent field names are separated by `/` — for example, `Vendor/Address`. |
| **Id** | string | Read-only | The identifier of a field definition from the document definition. |
| **InstanceId** | string | Read-only | The identifier of a field instance. If the document has no instances of the field, `InstanceId` is `null`. |
| **InstanceIndex** | number | Read-only | The index of the current instance among all repeating fields of the same type. Only meaningful for repeating fields. |
| **Instances** | Field\[] | Read-only | All instances of this field. Only meaningful for repeating fields. |
| **IsConfirmed** | boolean | Read-only | `true` if the value was confirmed by an operator during verification. |
| **IsRepeatable** | boolean | Read-only | `true` if the field is repeating. |
| **IsSuspicious** | boolean | Read-only | `true` if recognition wasn't confident for this field. |
| **IsValid** | boolean | Read-only | `true` if `Text` converted successfully to a `Value` of the correct type; otherwise `false`. |
| **IsVisible** | boolean | Read-only | `true` if the field is visible to operators; `false` if hidden during verification. |
| **Name** | string | Read-only | The field name. |
| **Parent** | Field | Read-only | The parent field. |
| **Regions** | [RegionsCollection](/vantage/documentation/skill-designer/process/custom-activity/region#collection) | Read-only | Regions on the image where the field is located. |
| **Text** | string | Read-only | The field text as detected on the document. |
| **Value** | object | Read-write | The field value converted to the appropriate data type (for example, date or float). |
| **Image** | [BinaryFile](/vantage/documentation/skill-designer/process/custom-activity/binary-file) | Read-only | The image in binary format. |
`Image` only applies to fields of type **Picture**.
## Methods
### AddInstance
```javascript theme={null}
Field AddInstance(any value?);
```
Creates or updates a field instance, depending on the field type:
* **Non-repeating fields** — Updates the existing instance, or creates one if none exists.
* **Repeating fields** — Creates a new instance.
Returns the created or updated `Field` object.
### Remove
```javascript theme={null}
void Remove();
```
Deletes the field.
## Related topics
The document currently being processed by the Custom activity.
The possible data types a field can contain.
Specifies the OCR type of the extracted field.
Area on a page image that contains the text for a field.
File data in binary format — typically the pre-preprocessing source image.
Full JavaScript object reference for Custom activity scripts.