[Plugin: Woo Product importer]Add featured image from CSV url grab?

So I found this woo products importer and it free and I was wondering if this my code can be insert to grab url for featured image from the CSV importer

so from preview.php add '_image' => 'Grab Image Url)', 

then add this for the result.php $new_post_meta['_image'] = 'no';

case '_image':
                        if ( $picture ) {
    		woocsv_add_featured_image ( $post_id , $picture[0] );
		}
	}
}

function woocsv_add_featured_image($post_id,$image_url) {

	$upload_dir = wp_upload_dir();
	$image_data = file_get_contents($image_url);
	$filename = basename($image_url);
	if(wp_mkdir_p($upload_dir['path']))
		$file = $upload_dir['path'] . '/' . $filename;
	else
		$file = $upload_dir['basedir'] . '/' . $filename;
	if (!file_put_contents($file, $image_data)) die ('file not oke'.$file);

	$wp_filetype = wp_check_filetype($filename, null );
	$attachment = array(
		'post_mime_type' => $wp_filetype['type'],
		'post_title' => sanitize_file_name($filename),
		'post_content' => '',
		'post_status' => 'inherit'
	);
	$attach_id = wp_insert_attachment( $attachment, $file, $post_id );
	require_once(ABSPATH . 'wp-admin/includes/image.php');
	$attach_data = wp_generate_attachment_metadata( $attach_id, $file );
	wp_update_attachment_metadata( $attach_id, $attach_data );
	set_post_thumbnail( $post_id, $attach_id );

}
break;

can some one change my code so the product upload works …..