I have trigger which is working but I need to update it and it is giving me an error ( only bold one is newly added)

I had two fields and based on the combination it was working but now I need to add another checbox called Active__c and if current condition and if Active__c is true then only trigger the trigger. It is giving me "Variable does not exist" error on Line 28

trigger Triggerupdatedirectbill on FX5__Ticket_Item__c (before insert, before update ) {
    if(Trigger.isBefore && (Trigger.isInsert || Trigger.isUpdate) ) {
        List<FX5__Ticket_Item__c> items = Trigger.new;
        Set<String> accountsIds = new Set<String>();
        Set<String> wellsIds = new Set<String>();
        for(FX5__Ticket_Item__c item:items) {
            if(item.Customerforlogiconly__c!= null) {
               accountsIds.add(item.Customerforlogiconly__c);
               System.debug(accountsIds);
            }
            if(item.Disposal_Location_on_Ticket_item__c!= null) {
                wellsIds.add(item.Disposal_Location_on_Ticket_item__c);
                 System.debug(wellsIds);
            }
        }
        Map<String, Obj_Direct_Bill_Customer__c> directInvoicesMap = new Map<String, Obj_Direct_Bill_Customer__c>();
        for(Obj_Direct_Bill_Customer__c di :[Select Direct_Bill_Customer__c, Disposal_Location__c, Active__c from Obj_Direct_Bill_Customer__c where Direct_Bill_Customer__c in :accountsIds and Disposal_Location__c in :wellsIds] ) {
            if(!directInvoicesMap.containsKey(di.Direct_Bill_Customer__c+'_'+di.Disposal_Location__c) ) {
                directInvoicesMap.put(di.Direct_Bill_Customer__c+'_'+di.Disposal_Location__c,di);
            }
            System.debug (di.direct_Bill_Customer__c);
            System.debug (di.Disposal_Location__c);
            System.debug (di.Direct_Bill_Customer__c+'_'+di.Disposal_Location__c);          
        }
        for(FX5__Ticket_Item__c item:items)       
         {
         System.debug (item.Customerforlogiconly__c+'_'+item.Disposal_Location_on_Ticket_item__c);
           if(directInvoicesMap.containsKey(item.Customerforlogiconly__c+'_'+item.Disposal_Location_on_Ticket_item__c) && di.Active__c==true){
                item.Direct_Bill_Customer__c = True;
                  }
            else {
                item.Direct_Bill_Customer__c = False;
            }
                
        }
        
    }
}