Single line text field
Example
{
    "type": "textbox",
    "id": "subject",
    "caption": "Subject",
	"validators": ["not-empty"]
}
Description
| Attribute | Description | Required | 
|---|---|---|
type | Specifies the type of the object  | X | 
id | Unique ID of the object, freely selectable | X | 
  | Caption which is displayed in the UI, freely selectable. If required, texts from the resource file in the currently set language can be loaded with Variables of type   | X  | 
  | Available validators: 
  | |
  | The value entered here will be inserted by default into the form field when loaded. On demand, Variables of type   |