Set Attribute of Json Object Using sails-mongo, Sails Js

Question

I want to modify a json object stored in field "additionalCharges" for Vehicles in Database. The main goal is to update the specific without replacing the whole json object. This should happen when I make an assignment such as transport assignment. the Schema of additionalCharges is:

additionalCharges:{
  transport: 300,
  service: 100,
  ...
}

The action for transportAssignment is as follows:

assignment = await TransportationAssignment.updateOne({ id }).set({
  ...inputs,
});
// update price of vehicle.additionalCharges.transport

await Vehicle.updateOne({ id: assignment.vehicle }).set({
  "additionalCharges.transport": assignment.shipmentPrice,
});

However this does not work. How can i achieve this?