WooCommerce REST Client API – Create Product

I am currently using the client-API to implement a simple user front-end to upload products. The function client->products->create() seems to work fine, how ever I can’t get around one issue. Every time I upload a product, the vendor is set to the admin user instead of the user that is currently logged in. Is there a way to set the vendor through the API? Has anybody get done this?

This is the function I created that is called by AJaX when the form is submitted (I left key and website fields empty here on purpose):

function addProduct()
{

$options = array(
    'debug'           => false,
    'return_as_array' => false,
    'validate_url'    => false,
    'timeout'         => 30,
    'ssl_verify'      => false,
);

try {

    $client = new WC_API_Client( '', '', '', $options );

    $productName = $_POST["productname"];
    $price = $_POST["price"];
    $discountPrice = $_POST["discountPrice"];
    $description = $_POST["description"];
    $shortDescription = $_POST["shortDescription"];
    $authorId = 5;

    $client->products->create( array( 'title' => $productName, 'type' => 'simple', 'regular_price' => $price, 'description' => $description));


} catch ( WC_API_Client_Exception $e ) {

    echo $e->getMessage() . PHP_EOL;
    echo $e->getCode() . PHP_EOL;

    if ( $e instanceof WC_API_Client_HTTP_Exception ) {

        print_r( $e->get_request() );
        print_r( $e->get_response() );
    }
}

echo ("Publicado". $authorId);

// Una función AJaX en WordPress debe siempre terminarse con die().
die();  

}