get null when element not exists

[chenwenhang]

Hello
My json：

{
  "showapi_res_error": "",
  "showapi_res_id": "6597a2f5fb638cf45b4d460c",
  "showapi_res_code": 0,
  "showapi_fee_num": 1,
  "showapi_res_body": {
    "list": [
      {
        "time": "14:26:57",
        "zhesuan": "193.69",
        "hui_out": "195.91",
        "chao_in": "192.95",
        "chao_out": "199.47",
        "hui_in": "194.55",
        "day": "2024-01-05"
      },
      {
        "time": "14:26:57",
        "zhesuan": "477.56",
        "code": "AUD",
        "hui_out": "481.77",
        "chao_in": "478.08",
        "chao_out": "483.16",
        "hui_in": "478.57",
        "day": "2024-01-05",
        "kkk": {"aaa":"bbb"}
      }
    ],
    "listSize": 28,
    "ret_code": 0
  }
}

I try to get all code and kkk.aaa from this json. I have set DEFAULT_PATH_LEAF_TO_NULL, the result is as follows:

$.showapi_res_body.list.*.name
[null, "AUD"] // right

$.showapi_res_body.list.*.kkk.aaa
["bbb"] // wrong, expect: [null, "bbb]

How may I get all kkk.aaa from this json including null?

Thanx!