wordpress - woocommerce set_stock_quantity not working -


i making plugin update stock quantity of woocommerce it's sort of third party cart want sync quantity of woocommerce other website data. code 

$quantity = floatval(5); $product_id = 10; $woocmmerce_instance = new wc_product( $product_id ); $woocmmerce_instance->set_stock_quantity($quantity);

but throws error php fatal error: call undefined method wc_product::set_stock_quantity()

used wc_update_product_stock() update product's stock amount.

put code in plugin perform operation update product quantity. 

global $woocommerce; $quantity = 5; $product_id = 10; $woocmmerce_instance = new wc_product( $product_id ); $new_quantity=wc_update_product_stock( $woocmmerce_instance, $quantity);

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