¿Cómo puedo actualizar los valores de un documento, donde el documento es una matriz?

db.get().collection(colección.CATEGORY_OFFER).insertOne(data).then(async(response)=>{ let product = await db.get().collection(collection.PRODUCT_COLLECTION).find({Category:catName }).toArray() console.log(producto) var bulkOp = db.get().collection(colección.PRODUCT_COLLECTION).initializeOrderedBulkOp();

 var count = 0; db.get().collection(collection.PRODUCT_COLLECTION).find().forEach(function(doc){ console.log("first") console.log(catName) console.log(catOffer) console.log(parseInt(doc.Prize)-parseInt(doc.Prize*catOffer/100)) bulkOp.find({Category:catName}).updateOne({ $set:{ offer:true, oldPrize:parseInt(doc.Prize), value:catOffer, Prize:(parseInt(doc.Prize)-parseInt(doc.Prize*catOffer/100)).toFixed(0) } }) count++; if(count % product.length === 0){ console.log("second") console.log(product.length) bulkOp.execute(); bulkOp =db.get().collection(collection.PRODUCT_COLLECTION).initializeOrderedBulkOp(); console.log("helo world") console.log(bulkOp) } }) if(count > 0 ){ console.log("third") bulkOp.execute(); } console.log("fifth") console.log(bulkOp) console.log(product) })