i do not know if this has answer or not but i couldn't fix my issue .

```
Shift.updateOne({
                $and: [{phone: number}, {statusSH: "open"}, {
                    'order.startTime': start,
                    'order.finishTime': finish
                },{'order.orders.5.stat':"false"}]
            },{'$set': {'order.orders.5.stat': "true"}},function (error,update) {
                if (update){

                }
            });

```

this 'order.orders.5.stat' works fine . but i don't know how i can use dynamic index . like if i have a "var index" where should i add that to query . it seems if i 'order.orders.'+index+'.stat' i get error .

All helps will be appreciated. Thank You.

Edit :

doc should be like this

```
    { 
        "_id": "5f52745e77abf55e80228379",
        "phone": "09898989666",
        "final": true,
        "statusSH": "open",
        "created_time": "1599239262",
        "__v": 0
        "order": {
                  "startTime": "139912292135",
                  "finishTime": "139912292240",
                  "orders": [
                   {
                    "_id": "5f52745e77abf55e8022837a",
                    "stat": "false",
                   },
                   {
                    "_id": "5f52745e77abf55e8022837b",
                   "stat": "false",
                    }
                    ]
                }
              }

```