Set OwnerID for a new task

[Анатолий Вешемирский]

public Guid CreateTask(IOrganizationService _service, string subject, string body, DateTime schedule, Guid entityId)
{
Guid taskId = Guid.Empty;
Entity objTask = new Entity("task");
objTask.Attributes["regardingobjectid"] = new EntityReference("opportunity", entityId);
objTask.Attributes["subject"] = subject;
objTask.Attributes["description"] = body;
objTask.Attributes["scheduledend"] = schedule;
taskId = _service.Create(objTask);
return taskId;
}