Activity search Error

Hi Guys,

I have a Scheduled SuiteScript that runs fine and I am now trying to add a function that returns the number of events attached to the lead, and I am getting the following debug + Error. 

I have run the search in the UI and it returns 1 record.  Any ideas?

 function GetNumberofEvents(customerName)  {      // Build Criteria for Search      var filters = new Array();      filters[0] = new nlobjSearchFilter('type', null, 'anyof', 'event');      filters[1] = new nlobjSearchFilter('company', null, 'anyof', customerName);                 // Return results from the Search      var results = new Array();      results[0] = new nlobjSearchColumn('title');                 nlapiLogExecution('DEBUG', 'Before act Search', 'customerID:' + customerName);                    // Execute the search      var numberOfEvents = nlapiSearchRecord('activity', null, filters, results);        if(numberOfEvents == null)      {          nlapiLogExecution('DEBUG', 'after act Search', 'number of events ' + 0);          return 0;      }      else      {          nlapiLogExecution('DEBUG', 'after act Search', 'number of events ' + numberOfEvents);          return parseInt(numberOfEvents);      }  }