带有MongoDB API的CosmosDB

MongoClientSettings settings = MongoClientSettings.FromUrl(
                      new MongoUrl(connectionString)
                    );
                    settings.SslSettings =
                      new SslSettings() { EnabledSslProtocols = SslProtocols.Tls12 };    
    var mongoClient = new MongoClient(settings);
    var mongoDatabase = mongoClient.GetDatabase("MYDATABASE");
    var mongoCollection = mongoDatabase.GetCollection<BsonDocument>("MYCOLLECTION");

    var builder = Builders<BsonDocument>.Filter;            
    var filter = builder.Lt("mac", "001BC50670101BB8") & builder.Gte("date", "2016-09-18T00:00:00Z") & builder.Gte("date", "2017-09-22T00:00:00Z");

    var query = mongoCollection.Find<BsonDocument>(filter).ToList<BsonDocument>();

但当它在服务器上运行查询时,我得到了以下错误:

Errors":["An invalid query has been specified with filters against path(s) that are not range-indexed. Consider adding allow scan header in the request."

我发现应该在请求中添加“x-ms-documentdb-query-enable-scan”标题。但是我怎么能做到呢?