Displaying Custom Field textarea

Note “type” and “mode” params, other are as in text field.

$form["field"][] = array(
    "name" => "my_custom_textarea",
    "type" => "adverts_field_textarea",
    "mode" => "plain-text", //other values: tinymce-mini, tinymce-full
    "order" => 25,
    "label" => "Custom Textarea",
    "is_required" => true,
    "validator" => array(
        array( "name" => "is_required" ),
    )
);