Mongodb $lookup管道中的地理查询

嗨，我有两个收集区和餐厅 我将从每个区域获取距离，并根据此距离从餐厅集合中获取餐厅列表

   db.area.aggregate([
 {
   $lookup: 
   {
     from: 'restaurant',
     let: { distance: "$distance" },
     pipeline: [
       { 
                    "$geoNear": {
                        "spherical": true,
                        "maxDistance": "$$distance",
                        "near": {
                            "type": "Point",
                            "coordinates": [
                                77.61546419999999,
                                12.9131813
                            ]
                        },
                        "distanceField": "data.distance",
                        "distanceMultiplier": 0.001,
                        "query":{}
                    }
                },
       },
     ],
     as: 'records'
   }
 }
])

但这不起作用，我是如何得到这种情况的

此区域收集数据

[
{
    "_id" : ObjectId("609b95d90cc373430554d29d"),
    "data" : {
        "storeid" : ObjectId("60903de5cd97cb204f61f202"),
    },
        distance:5000
    "geopoint" : {
        "coordinates" : [
            77.5717752,
            12.812942
        ],
        "type" : "Point"
    },
}],

这是餐厅的数据

{"active":true,"name":"test restaurant","geopoint":{"coordinates":[77.6325948,12.9109546],"type":"Point"}}

---

当我像这样通过时$$distance MongoDB给定错误最大距离必须是一个数字请提供数据集的某些部分。请在问题中提供它、来自该地区的文档和餐厅收藏。