Problem to add new tab

Hi,
I am trying to add a new tab following documentation, first I installed Woocommerce Product Tabs plugin, after I created tab and add it the text but it doesnt display in tour page. Also I made second way but it happens same.
I only get it pasting a code that I saw in support but it show atributes destination and months
add_filter( ‘tour_booking_default_product_tabs’, ‘custom_tour_booking_default_product_tabs’, 98 );
function custom_tour_booking_default_product_tabs( $tabs ) {
global $product;
if ( $product && ( $product->has_attributes() || apply_filters( ‘wc_product_enable_dimensions_display’, $product->has_weight() || $product->has_dimensions() ) ) ) {
$tabs[‘additional_information’] = array(
‘title’ => __( ‘Additional information’, ‘woocommerce’ ),
‘priority’ => 20,
‘callback’ => ‘woocommerce_product_additional_information_tab’,
);
}
return $tabs;
}