How should i get the _id of newly inserted/updated value in object array.

Currently i am using ‘“quantity.$._id”: 1‘

but it’s still returning whole document.

.

updatePackage.pricingCreated = await Item.findOneAndUpdate(
       { _id: entry.itemID, 'quantity._id': entry.storageID },
       { 
          $addToSet: { "pricing": [{ "firstAddedDate": today, mrp: entry.mrp, price: entry.price, qty: entry.qty }]} ,
          $inc: { 'quantity.$.qty': entry.qty },
       },
       { "quantity.$._id": 1, returnDocument: "after"})