getCustomParamsProvider(); $image = $provider->getRequiredParameter('image'); // Adding - if necessary - CORS headers. $origin = isset($_SERVER['HTTP_ORIGIN']) ? $_SERVER['HTTP_ORIGIN'] : ""; $res = new com_wiris_system_service_HttpResponse(); $pluginBuilder->addCorsHeaders($res, $origin); $cas = $pluginBuilder->newCas(); $outp = array(); echo $cas->createCasImage($image);