Какой командой спарсить значение переменной в программе Postman?

Здравствуйте.
Работаю в программе Postman.
Из GET ответа нужно записать значение переменой totalElements в переменную и lastName пользователя 3 в другую переменную как это сделать?

Для totalElements пробовал вот эту команду, не работает:
pm.environment.set("value_test", pm.environment.get("totalElements"));

{
  "_embedded": {
    "users": [
      {
        "id": 3,
        "firstName": "Robert",
        "lastName": "Smith",
        "email": "workingemail-3@gmail.com",
        "dayOfBirth": "1931-07-19",
        "_links": {
          "self": {
            "href": "http://localhost:8080/api/users/3"
          },
          "user": {
            "href": "http://localhost:8080/api/users/3"
          }
        }
      },
      {
        "id": 4,
        "firstName": "Mary",
        "lastName": "Portman",
        "email": "workingemail-4@gmail.com",
        "dayOfBirth": "1972-07-19",
        "_links": {
          "self": {
            "href": "http://localhost:8080/api/users/4"
          },
          "user": {
            "href": "http://localhost:8080/api/users/4"
          }
        }
      },
      {
        "id": 5,
        "firstName": "Mary",
        "lastName": "Erickson",
        "email": "workingemail-5@gmail.com",
        "dayOfBirth": "2000-07-19",
        "_links": {
          "self": {
            "href": "http://localhost:8080/api/users/5"
          },
          "user": {
            "href": "http://localhost:8080/api/users/5"
          }
        }
      },
      {
        "id": 6,
        "firstName": "Mark",
        "lastName": "Roach",
        "email": "workingemail-6@gmail.com",
        "dayOfBirth": "1957-07-19",
        "_links": {
          "self": {
            "href": "http://localhost:8080/api/users/6"
          },
          "user": {
            "href": "http://localhost:8080/api/users/6"
          }
        }
      },
      {
        "id": 7,
        "firstName": "John",
        "lastName": "Doe",
        "email": "workingemail-7@gmail.com",
        "dayOfBirth": "1993-07-19",
        "_links": {
          "self": {
            "href": "http://localhost:8080/api/users/7"
          },
          "user": {
            "href": "http://localhost:8080/api/users/7"
          }
        }
      },
      {
        "id": 8,
        "firstName": "John",
        "lastName": "Li",
        "email": "workingemail-8@gmail.com",
        "dayOfBirth": "1943-07-19",
        "_links": {
          "self": {
            "href": "http://localhost:8080/api/users/8"
          },
          "user": {
            "href": "http://localhost:8080/api/users/8"
          }
        }
      },
      {
        "id": 9,
        "firstName": "Mary",
        "lastName": "Erickson",
        "email": "workingemail-9@gmail.com",
        "dayOfBirth": "1993-07-19",
        "_links": {
          "self": {
            "href": "http://localhost:8080/api/users/9"
          },
          "user": {
            "href": "http://localhost:8080/api/users/9"
          }
        }
      },
      {
        "id": 10,
        "firstName": "Robert",
        "lastName": "Doe",
        "email": "workingemail-10@gmail.com",
        "dayOfBirth": "1999-07-19",
        "_links": {
          "self": {
            "href": "http://localhost:8080/api/users/10"
          },
          "user": {
            "href": "http://localhost:8080/api/users/10"
          }
        }
      },
      {
        "id": 11,
        "firstName": "Robert",
        "lastName": "Li",
        "email": "workingemail-11@gmail.com",
        "dayOfBirth": "2000-07-19",
        "_links": {
          "self": {
            "href": "http://localhost:8080/api/users/11"
          },
          "user": {
            "href": "http://localhost:8080/api/users/11"
          }
        }
      },
      {
        "id": 12,
        "firstName": "Mark",
        "lastName": "Portman",
        "email": "workingemail-12@gmail.com",
        "dayOfBirth": "1988-07-19",
        "_links": {
          "self": {
            "href": "http://localhost:8080/api/users/12"
          },
          "user": {
            "href": "http://localhost:8080/api/users/12"
          }
        }
      },
      {
        "id": 13,
        "firstName": "Nataly",
        "lastName": "Doe",
        "email": "workingemail-13@gmail.com",
        "dayOfBirth": "1983-07-19",
        "_links": {
          "self": {
            "href": "http://localhost:8080/api/users/13"
          },
          "user": {
            "href": "http://localhost:8080/api/users/13"
          }
        }
      },
      {
        "id": 14,
        "firstName": "Nataly",
        "lastName": "Smith",
        "email": "workingemail-14@gmail.com",
        "dayOfBirth": "1994-07-19",
        "_links": {
          "self": {
            "href": "http://localhost:8080/api/users/14"
          },
          "user": {
            "href": "http://localhost:8080/api/users/14"
          }
        }
      },
      {
        "id": 15,
        "firstName": "Robert",
        "lastName": "Smith",
        "email": "workingemail-15@gmail.com",
        "dayOfBirth": "1971-07-19",
        "_links": {
          "self": {
            "href": "http://localhost:8080/api/users/15"
          },
          "user": {
            "href": "http://localhost:8080/api/users/15"
          }
        }
      },
      {
        "id": 16,
        "firstName": "John",
        "lastName": "Smith",
        "email": "workingemail-16@gmail.com",
        "dayOfBirth": "1991-07-19",
        "_links": {
          "self": {
            "href": "http://localhost:8080/api/users/16"
          },
          "user": {
            "href": "http://localhost:8080/api/users/16"
          }
        }
      },
      {
        "id": 17,
        "firstName": "Mary",
        "lastName": "Erickson",
        "email": "workingemail-17@gmail.com",
        "dayOfBirth": "1996-07-19",
        "_links": {
          "self": {
            "href": "http://localhost:8080/api/users/17"
          },
          "user": {
            "href": "http://localhost:8080/api/users/17"
          }
        }
      },
      {
        "id": 18,
        "firstName": "Mark",
        "lastName": "Li",
        "email": "workingemail-18@gmail.com",
        "dayOfBirth": "1961-07-19",
        "_links": {
          "self": {
            "href": "http://localhost:8080/api/users/18"
          },
          "user": {
            "href": "http://localhost:8080/api/users/18"
          }
        }
      },
      {
        "id": 19,
        "firstName": "Alex",
        "lastName": "Smith",
        "email": "workingemail-19@gmail.com",
        "dayOfBirth": "1996-07-19",
        "_links": {
          "self": {
            "href": "http://localhost:8080/api/users/19"
          },
          "user": {
            "href": "http://localhost:8080/api/users/19"
          }
        }
      },
      {
        "id": 20,
        "firstName": "Alex",
        "lastName": "Smith",
        "email": "workingemail-20@gmail.com",
        "dayOfBirth": "1934-07-19",
        "_links": {
          "self": {
            "href": "http://localhost:8080/api/users/20"
          },
          "user": {
            "href": "http://localhost:8080/api/users/20"
          }
        }
      },
      {
        "id": 21,
        "firstName": "Fsdkfjn",
        "lastName": "Fldfjs",
        "email": "sks@ksdnf.ru",
        "dayOfBirth": "2004-05-23",
        "_links": {
          "self": {
            "href": "http://localhost:8080/api/users/21"
          },
          "user": {
            "href": "http://localhost:8080/api/users/21"
          }
        }
      },
      {
        "id": 24,
        "firstName": "ksfsldkjf",
        "lastName": "lsknfslk",
        "email": "slfk@skljf.ru",
        "dayOfBirth": "2000-05-20",
        "_links": {
          "self": {
            "href": "http://localhost:8080/api/users/24"
          },
          "user": {
            "href": "http://localhost:8080/api/users/24"
          }
        }
      }
    ]
  },
  "_links": {
    "first": {
      "href": "http://localhost:8080/api/users/?page=0&size=20"
    },
    "self": {
      "href": "http://localhost:8080/api/users/"
    },
    "next": {
      "href": "http://localhost:8080/api/users/?page=1&size=20"
    },
    "last": {
      "href": "http://localhost:8080/api/users/?page=1&size=20"
    },
    "profile": {
      "href": "http://localhost:8080/api/profile/users"
    }
  },
  "page": {
    "size": 20,
    "totalElements": 22,
    "totalPages": 2,
    "number": 0
  }
}
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Решения вопроса 1
@d-sem
Что мешает сделать экспорт запроса из Postman'a в код (есть такая фукция) на Javascript и работать с данными уже там?)

https://cdn.softwaretestinghelp.com/wp-content/qa/...
https://cdn.softwaretestinghelp.com/wp-content/qa/...
https://cdn.softwaretestinghelp.com/wp-content/qa/...

На скриншотах старая версия. В новой версии есть три варианта экспорта - XHR, Fetch, jQuery
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