Can't update Array of objects

I'm trying to create an array of objects using simple-schema. In this example, a person has a careerHistory object that is filled with individual positions. I can't figure out how to insert and update the array of objects. It just errors. The only way I can get it to work is to be explicit, eg. 'careerHistory.position.1.company'.

I'm using:

• meteor
• simple-schema
• reactjs
• collection2-core

Path: mongodb

const ProfileCandidateSchema = new SimpleSchema({
  userId: {
    type: String,
    regEx: SimpleSchema.RegEx.Id
  },
  careerHistory: { type: Array, optional: true },
  'careerHistory.position': { type: Object, optional: true },
  'careerHistory.position.$': { type: Object, optional: true },
  'careerHistory.position.$.company': { type: String, optional: true },
  'careerHistory.position.$.title': { type: String, optional: true }
});

Path: updateForm.js

ProfileCandidate.update(id, { $set: {
    'careerHistory.position.company': this.state['position.company'],
    'careerHistory.position.title': this.state['position.title'],
  }
});

If you want to push object to array do

ProfileCandidate.update(id, 
  { $push: { careerHistory: { position: {
    'company': this.state['position.company'],
    'title': this.state['position.title'],
  }}}
});

if you want to update particular object

ProfileCandidate.update({ _id: id, 'careerHistory.position.company': this.state['position.company'] }, { $set: {
    'careerHistory.position.$.title': this.state['position.title'],
  }
});

see $ in set