public function get_field() {
		$custom_fields = get_transient( 'ua_ac_contact_fields_list' );
		$ac_helper = Automator()->helpers->recipe->active_campaign->options;
		if ( false === $custom_fields ) {
			$ac_helper->sync_contact_fields( false );
		}
		$fields = array(
			array(
				'option_code' => $this->prefix . '_PHONE_NUMBER',
				'label'       => esc_attr__( 'Phone number', 'uncanny-automator' ),
				'placeholder' => esc_attr__( '(+00) 987 123 4567', 'uncanny-automator' ),
				'input_type'  => 'text',
				'required'    => false,
			),
		);
		// Add the custom fields options.
		$fields = array_merge( $fields, $ac_helper->get_custom_fields( $this->prefix ) );
		// Add the checkbox.
		$fields[] = array(
			'option_code' => $this->prefix . '_UPDATE_IF_CONTACT_EXISTS',
			'label'       => esc_attr__( 'If the contact already exists, update their info.', 'uncanny-automator' ),
			'input_type'  => 'checkbox',
		);
		return $fields;
	
	}