function scoreAd(ad, bid, auction_config, seller_signals, trusted_scoring_signals,
                          contextual_signal, custom_audience_scoring_signals) {
                          if (!ad.metadata.isRealAd) {   
                             return {'status': 0, 'score': 0 };   
                          }   
                          const custom_audiences = new Set();   
                          for (const scoring_signal of custom_audience_scoring_signals) {   
                              custom_audiences.add(scoring_signal.name)   
                          }   
                          const targetingCAs = ad.metadata.targetingCAs;   
                          for (const targetingCA of targetingCAs) {   
                              if (custom_audiences.has(targetingCA)) {   
                                   return {'status': 0, 'score': bid + 30 }; 
                              } else {   
                                   return {'status': 0, 'score': bid }; 
                              }   
                          }   
                        }
                        
                        
                        function reportResult(ad_selection_config, render_uri, bid, contextual_signals) {
                          let reporting_address = 'https://reporting.example.com';
                          let clickUri = reporting_address + '/sellerInteraction?click';
                          let viewUri = reporting_address + '/sellerInteraction?view';
                          const beacons = {'click': clickUri, 'view': viewUri};
                          registerAdBeacon(beacons);
                          return {'status': 0, 'results': {'signals_for_buyer': '{\signals_for_buyer\ : 1}'
                                  , 'reporting_uri': reporting_address + 'reportResult?render_uri=' +
                                     render_uri + '?bid=' +  bid } };
                        }