setInvoiceDate("2014-11-16 PST"); // For Sample Purposes Only. $request = clone $invoice; try { // ### Update Invoice // Update an invoice by calling the invoice->update() method // with a valid ApiContext (See bootstrap.php for more on `ApiContext`) $invoice->update($apiContext); } catch (Exception $ex) { ResultPrinter::printError("Invoice Updated", "Invoice", null, $request, $ex); exit(1); } ResultPrinter::printResult("Invoice Updated", "Invoice", $invoice->getId(), $request, $invoice); return $invoice;