1.7.6.5 Extract product supplier reference

[Geoc112]

Hello, i have a php script that creates a csv product feed when executed.

I used $item['mpn'] = $product->supplier_reference; but it just returns an empty field even if the products does have a supplier reference.

		if($product->supplier_name == "supplier1" || $product->supplier_name == "supplier2"){
			$item['mpn'] = $product->supplier_reference;
		} else {
			$item['mpn'] = $product->reference;
		}