Problem on adding product via code.

Hi,

I am trying to add product via code in my plugin. In which i am getting data from some external server via rest call and add products like this.

$objProduct = new WC_Product();
$objProduct->set_name($product->ProductName);
$objProduct->set_status(“publish”); // can be publish,draft or any wordpress post status
$objProduct->set_catalog_visibility(‘visible’); // add the product visibility status
$objProduct->set_description($product->Description);
$objProduct->set_sku($product->ProductNumber);
$objProduct->set_price(55); // set product price
$objProduct->set_regular_price(77); // set product regular price
$objProduct->set_manage_stock(true); // true or false
$objProduct->set_stock_quantity($totalInStock);
if($totalInStock > 0)
$objProduct->set_stock_status(‘instock’); // in stock or out of stock value
else
$objProduct->set_stock_status(‘outstock’); // in stock or out of stock value
$objProduct->set_backorders(‘no’);
$objProduct->set_reviews_allowed(true);
$objProduct->set_sold_individually(false);
$objProduct->set_category_ids($cat_ids);
$productImagesIDs = array(); // define an array to store the media ids.
echo ‘Product_id:’;
echo $product_id = $objProduct->save();

First time it did add a product and return product_id 80. But never again it could add product. Now it always return 0 as product_id and no product add.

I am following this: https://www.sbloggers.com/add-a-woocommerce-product-using-custom-php-code-programmatically