public function doReauth()
 {
     $logger = new PPLoggingManager('DoReauthorization');
     // ## DoAuthorizationReq
     $doReauthorizationReq = new DoReauthorizationReq();
     // `Amount` to reauthorize which takes mandatory params:
     //
     // * `currencyCode`
     // * `amount`
     $amount = new BasicAmountType("USD", "3.00");
     // `DoReauthorizationRequest` which takes mandatory params:
     //
     // * `Authorization Id` - Value of a previously authorized transaction
     // identification number returned by PayPal.
     // * `amount`
     $doReauthorizationRequest = new DoReauthorizationRequestType("9B2288061E685550E", $amount);
     $doReauthorizationReq->DoReauthorizationRequest = $doReauthorizationRequest;
     // ## Creating service wrapper object
     // Creating service wrapper object to make API call and loading
     // configuration file for your credentials and endpoint
     $service = new PayPalAPIInterfaceServiceService();
     try {
         // ## Making API call
         // Invoke the appropriate method corresponding to API in service
         // wrapper object
         $response = $service->doReauthorization($doReauthorizationReq);
     } catch (Exception $ex) {
         $logger->error("Error Message : " + $ex->getMessage());
     }
     // ## Accessing response parameters
     // You can access the response parameters using variables in
     // response object as shown below
     // ### Success values
     if ($response->Ack == "Success") {
         // Authorization identification number
         $logger->log("Authorization ID:" . $response->AuthorizationID);
     } else {
         $logger->error("API Error Message : " . $response->Errors[0]->LongMessage);
     }
     return $response;
 }