mongodbreader 可以解析object 类型数据吗

如：
{
"_id" : ObjectId("625f69a25c79722c3b4610c9"),
"recordId" : NumberLong("617"),
"recordType" : "order",
"recordTypeId" : NumberLong("70"),
"formId" : NumberLong("3000001"),
"delete" : false,
"data" : {
"isUpdateModifyTime" : "1",
"inspection_place" : "1",
"isSampleGroupApproved" : false,
"need_gm_approve" : false,
"opportunityId" : NumberLong("588"),
"writeOffAmount" : Double("0"),
"quote" : NumberLong("8003"),
"inactive" : false,
"isUpdateZone" : "1"
},
"asData" : {

},
"_class" : "com.suiteopen.boot.custom.domain.CustomRecord"
}

我想读取`data.writeOffAmount`该 如何配置 reader

"reader": {
"name": "mongodbreader",
"parameter": {
"address": ["17 :27017"],
"collectionName": "order",
"column": [
{
"name":"recordId",
"type":"string"
},
{ "name":"data.writeOffAmount",
"type":"string"
}
],
"dbName": "dd",
"userName": "dd t",
"userPassword": "a af"
}

Start with the mongodbreader entry point and its column mapping configuration, focusing on how nested names such as data.writeOffAmount and MongoDB object values are handled. Confirm whether the requested field can be selected with the shown configuration and define done as successfully reading its value from the sample document.

Written by the indexing model from the issue text.