hi,
unable to update account, Whenever the record is deleated the count is not reflecting in the account below is the code

Trigger For_counting_the_CPDrecords on Customer_Policy_details__c (after update,after delete){

 if(trigger.isafter == true && trigger.isdelete == true){

                                 updating_count_of_ploicies_in_Account.Method_for_calucating_when_deleated(trigger.oldMap);

 }
 
 

public class  updating_count_of_ploicies_in_Account {
Public static void Method_for_calucating_when_deleated (map<id,Customer_Policy_details__c> varoldmap){

             map<id,Customer_Policy_details__c>  varmaplist = new map<id,Customer_Policy_details__c>();

                system.debug(varoldmap);
          for(Customer_Policy_details__c varc : varoldmap.values()){

             if(varc.Account__c != null){
                         varmaplist.put(varc.Account__c,varc);
                 system.debug(varmaplist);
         }
              
              
     }
       

       List<Account> Addingrecords = [SELECT id,Expired__c,Active_Policies__c,(SELECT id,Policy_Status__c FROM Customer_Policy_details__r where id in: varoldmap.keyset())
                                      FROM Account WHERE id IN:varmaplist.keyset()];
         system.debug(Addingrecords.size());
    
    if(Addingrecords.size() > 0) {
 for(Account vara : Addingrecords){
  system.debug(Addingrecords);
     
 for(Customer_Policy_details__c a : vara.Customer_Policy_details__r){
     
 system.debug(vara.Customer_Policy_details__r);
               if(a.Policy_Status__c == 'Active'){
                    system.debug(vara.Active_Policies__c);
                  vara.Active_Policies__c -=1;
                 system.debug(vara.Active_Policies__c);
              }
                if(a.Policy_Status__c == 'Expired'){
                 
                        vara.Expired__c -=1;
                 
               }
         }
 }
         update Addingrecords; 
        }
   }
}