Hello,

global class ApexScheduledClass Implements Schedulable
            {
                       global void execute(SchedulableContext sc)
                        {
                                    ValAdd();
                        }
 public  static void ValAdd()
  { 
 
List<FBR_Inquiry__c> Inquiry= [SELECT KPIInquiryContent__c,KPIInquiryContent__r.Account__c,CommodityName__c,ModifyDate__c,Status__c from FBR_Inquiry__c  ];
{
FBR_Inquiry__c FBR= Inquiry[0];
Date startDate=FBR.ModifyDate__c.toStartOfMonth();
Date endDate=FBR.ModifyDate__c.toStartOfMonth().addMonths(1);

LIST<AggregateResult> countmonth=[SELECT count(KPIInquiryContent__c) coun from FBR_Inquiry__c where KPIInquiryContent__r.Account__c=:FBR.KPIInquiryContent__r.Account__c and ModifyDate__c >= :startDate AND ModifyDate__c < :endDate and PayoffObject__c=:'○' and Status__c IN('dry' ,'dfjgfj')];

LIST<AggregateResult> calmonth=[Select count(ImportCount__c) icount from WorkResultsMonth__c where WorkDate__c >= :startDate and WorkDate__c < :endDate and Account_Name__c=:FBR.KPIInquiryContent__r.Account__c];

List<KPIAccident__c> acc= [SELECT Date__c,MonthlyGeneratedCount__c,MonthlyPPM__c from KPIAccident__c where  Account_Name__c=:FBR.KPIInquiryContent__r.Account__c and Date__c >= :startDate and Date__c < :endDate];
if(!acc.isEmpty() )
      {
         
          KPIAccident__c accupdate = acc[0];        
          Integer totalcountmonth=Integer.Valueof(countmonth[0].get('coun'));
         
          accupdate.MonthlyGeneratedCount__c=totalcountmonth;  
        
          Integer totalmonthwork= Integer.Valueof(calmonth[0].get('icount'));
          accupdate.MonthlyPPM__c=((totalmonthwork/totalcountmonth)*1000000);
          update accupdate;
      }else
      {
         KPIAccident__c kpi = new KPIAccident__c();
         List<KPIAccident__c> ToUpdate = new List<KPIAccident__c>();
         kpi.Date__c=FBR.ModifyDate__c;        
          kpi.Account__c=FBR.KPIInquiryContent__r.Account__c;        
         kpi.itemname__c= FBR.CommodityName__c;    
        
         Integer totalcountmonths=Integer.Valueof(countmonth[0].get('coun'));
         kpi.MonthlyGeneratedCount__c=totalcountmonths;
         Integer totalmonthworks= Integer.Valueof(calmonth[0].get('icount'));
                   
         kpi.MonthlyPPM__c=((totalmonthworks/totalcountmonths)*1000000);
         ToUpdate.add(kpi);
         insert ToUpdate;

}
}
} }

Above is my class, After save this go to Setup->Develop->Apex Classes then clicking on the ‘Schedule Apex’ button. and scheduled my class to run monthly but it doesn't get  start..

Is there any wrong what i did,, Please help me solve this