Plugin with SetStateRequest in Create Record

if (!String.IsNullOrEmpty(customer_name))
                    {
                        QueryExpression query_contacy = new QueryExpression("new_listinternal");
                        query_contacy.ColumnSet = new ColumnSet(true);

                        EntityCollection ent = _service.RetrieveMultiple(query_contacy);
                        foreach (Entity e in ent.Entities)
                        {
                            if (e.Attributes.Contains("new_email"))
                            {
                                 emil = e.GetAttributeValue<String>("new_email");

                                 if(customer_name.Equals(emil))
                                 {

                                     try
                                     {
                                         SetStateRequest stateReq = new SetStateRequest();
                                         stateReq.EntityMoniker = (EntityReference)entity.ToEntityReference();
                                         stateReq.State = new OptionSetValue(2);
                                         stateReq.Status = new OptionSetValue(6);

                                         SetStateResponse response = new SetStateResponse();
                                         response = (SetStateResponse)_service.Execute(stateReq);
                                     }
                                     catch (Exception ex)
                                     {
                                         throw new InvalidPluginExecutionException(ex.Message);
                                     }
                                 }
                            }
                        }
                    }