此查询每次都不返回任何内容 . 我错过了什么?谢谢!

查询:

Query query = FirebaseDatabase.DefaultInstance.GetReference("submissions").
OrderByChild("Time").StartAt(100000000).EndAt(999999999).LimitToFirst(10);

数据结构:

{
    "submissions": {
        "key1": {
            "Time": 100000001
        },
        "key2": {
            "Time": 100000005
        }
    }
}

呼叫:

query.GetValueAsync().ContinueWith(task => {});