EntityReferenceとOptionSetValue値設定

var service = factory.CreateOrganizationService(context.UserId);
var target = (Entity)context.InputParameters["Target"];

var entityTest = new Entity("entityTest");

// GUID　設定
entityTest["new_infoid"] = objectid.Id;  //objectid ⇒EntityReference

//オプションセットバリュー設定
entityTest["new_status"] = new OptionSetValue((int)100000001);


// EntityReference　設定
entityTest["new_regist_bank_account"] = new EntityReference("new_account", target.Id);

Guid Value = (Guid)mstEntity.Attributes["new_masterid"];
EntityReference master = new EntityReference("new_master", Value);
["new_name"] = master;

service.Update(entityTest);