How to partially modify an object in MongoDB?

Question

MongoDB

Hello. I am using node-mongodb-native.
After the following code, all fields are completely erased from the selected object and only time: "20:00" remains

let users = db.collection('users');
users.update({telegramId:4}, {time:'20:00'}, function(err) {
      if (err) throw err;
});

What method to call so that the time field changes and the rest remain unchanged?

Answer 1

{$set: {time:'20:00'}}