从JsArray获取值并将值分配给变量

Question

将一个具有多个JSArray的JSON传递到一个case类中，我需要获取JSArray中一个元素的值并将该值分配给变量。

case class ReportsFields(
                      reportid: Option[Long],
                      Columns: List[SelectedColumns],
                      groupBy: List[GroupByFields],
                      report_data: Option[JsArray],
                      header :Option[JsArray],
                    )

JSON

{
"cubeid": 12378128388011,
"categoryName": "CustomeTextFeature",
"reports": [
    {
        "selectedColumns": [
            {
                "field": "hospitalgroupidEHI_0bA",
                "selectedCubeColumnId": 4705=
            },
            {
                "field": "dischargedetailEHI_1MA",
                "selectedCubeColumnId": 4706
            }
        ],
        "groupBy": [],
        "report_data":[
            {
                "formatType": "text",
                "value": "This is a sample text to be printed in the report"
            },
            {
                "formatType": "text size",
                "value": 12
            },
            {
                "formatType": "text alignment",
                "value" : "RIGHT"
            },
            {
                "formatType": "page height",
                "value" : "12"
            },
            {
                "formatType": "page width",
                "value" : "8"
            }
        ],
        "header": [
            {
                "formatType": "text",
                "value": "Test"
            },
            {
                "formatType": "font size",
                "value": 12
            }
        ]
    }
]}

通过传递此Json，我想分配 "formatType": "page height", "value" : "12" 设置为Height = 12

当我解析并获取所有JSArray值并发送失败时， 有什么想法吗？