MS Dynamics 365- Close Quote from C# / Custom action

  string id = "d2b1ac82-b18a-ea11-a811-000d3a35bdc2";
            int statusReason = 5;          

        // First activate quote
            Entity party = new Entity("quote", new Guid(id));
            party["statecode"] = new OptionSetValue(1); // status - Active
            party["statuscode"] = new OptionSetValue(2); // status Reason - inprogress
            service.Update(party);
                                 
       // then close the quote 
            CloseQuoteRequest req = new CloseQuoteRequest();
            Entity quoteClose = new Entity("quoteclose");
            quoteClose.Attributes.Add("quoteid", new EntityReference("quote", new Guid(id)));
            quoteClose.Attributes.Add("subject", "Customer was mean so we just closed it.");           
            req.QuoteClose = quoteClose;
            req.RequestName = "CloseQuote";
            OptionSetValue o = new OptionSetValue();
            o.Value = statusReason;
            req.Status = o;
            
            CloseQuoteResponse resp = (CloseQuoteResponse)service.Execute(req);