Topic: Adding Custom Tab in Functions.php

Adding a custom tab via https://docs.woocommerce.com/document/editing-product-data-tabs/ doesn’t seem be working. Is there another filter that should be used? I am using the Single Product Builder.

I’ll be altering to show/hide a tab based on product category.

/*** Add a custom product data tab */
add_filter( 'woocommerce_product_tabs', 'woo_new_product_tab' );
function woo_new_product_tab( $tabs ) {	
	// Adds the new tab	
	$tabs['test_tab'] = array(
		'title' 	=> __( 'New Product Tab', 'woocommerce' ),
		'priority' 	=> 50,
		'callback' 	=> 'woo_new_product_tab_content'
	);
	return $tabs;
}
function woo_new_product_tab_content() {
	// The new tab content
	echo '<h2>New Product Tab</h2>';
	echo 'Here\'s your new product tab.
';	
}