WC Vendors Pro add custom shipping providers

functions.php

/* WC Vendors Pro add custom shipping providers */
add_filter ('wcv_shipping_providers_list', 'custom_wcv_shipping_providers_list');
function custom_wcv_shipping_providers_list() {
	$shipping_providers = array(
			'Country Provider is For or Custom Heading' => array(
				'Shipping Company #1' => 'http://their-website-for-tracking.com/%1$s',
				'Shipping Company #2' => 'https://another-website-for-tracking.com/?tracking=%1$s', 
				),
			);
	return $shipping_providers;
}