print custom tab visible for admin

Hi,
I added a custom tab visible just for admins and I need to print it too

add_filter( 'woocommerce_product_tabs', 'woo_new_product_tab' );
// function woo_new_product_tab( $tabs ) {
	
// 	// Adds the new tab
// 	if (current_user_can('administrator')):
// 		$tabs['test_tab'] = array(
// 			'title' 	=> __( 'New Product Tab', 'woocommerce' ),
// 			'priority' 	=> 50,
// 			'callback' 	=> 'woo_new_product_tab_content'
// 		);
// 	endif;
// 	//var_dump(current_user_can('administrator'));
// 	return $tabs;

// }
// function woo_new_product_tab_content() {

// 	// The new tab content

// 	echo '<h2>New Product Tab</h2>';
// 	echo '<p>Here\'s your new product tab.</p>';
	
// }

how can I do that?
thanks