我正在尝试使用jslt计算一些变量。我有一个类似这样的JSON：

{
"total_amount": 5349,
"total_amount_currency": "USD",
"latest_reservation_date": "05-24-2022",
"reservations":[

    "reservation1": {
        "amount": "3284",
        "currency": "USD",
        "reservation_date": "02-14-2021",
        "countries_visited": [
            "country1": {"Malaysia"},
            "country2": {"Singapore"},
            "country3": {"Brunei"}
        ]
    },
    "reservation2": {
        "amount": "2065",
        "currency": "USD",
        "reservation_date": "05-24-2022",
        "countries_visited": [
            "country1": {"South Africa"},
            "country2": {"Namibia"}
        ]
    }
]
}

并且，在迭代"countries_visited"数组时，我想引用父节点中的一个元素，比如"reservation_date"，但我不知道如何操作。提前感谢任何帮助！！