woocommerce how to get the value of custom upsell - woocommerce

Question

I am trying to create a custom upsell n woocommerce field. This code allowed me to create the custom field in the backend. I can't get the products to show via the echo
It returns me the word Array.
What am I doing wrong?
The value should be displayed in a custom jquery sidebar
// Display a custom select field in "Linked Products" section
add_action( 'woocommerce_product_options_related',
'display_linked_products_data_custom_field' );
function display_linked_products_data_custom_field() {
global $product_object, $post;
?>
<p class="form-field">
<label for="total_look"><?php _e( 'Total Look EleNelen', 'woocommerce' ); ?>.
</label>
<select class="wc-product-search" multiple="multiple" style="width: 50%;"
id="total_look_ids" name="_total_look_ids[]" data-placeholder="<?php esc_attr_e(
'Search for a product…', 'woocommerce' ); ?>" data-
action="woocommerce_json_search_products_and_variations" data-exclude="<?php echo
intval( $post->ID ); ?>">
<?php
$product_ids = $product_object->get_meta( '_total_look_ids' );
foreach ( $product_ids as $product_id ) {
$product = wc_get_product( $product_id );
if ( is_object( $product ) ) {
echo '<option value="' . esc_attr( $product_id ) . '"' .
selected( true, true, false ) . '>' . wp_kses_post( $product->get_formatted_name() )
. '</option>';
}
}
?>
</select>
</p>
<?php
}
// Save the values to the product
add_action( 'woocommerce_admin_process_product_object',
'save_linked_products_data_custom_field_value', 10, 1 );
function save_linked_products_data_custom_field_value( $product ){
$data = isset( $_POST['_total_look_ids'] ) ? array_map( 'intval', (array)
$_POST['_total_look_ids'] ) : array();
$product->update_meta_data( '_total_look_ids', $data );
}