dynamically set a nested property?

[michaelpalumbo]

First off, thanks for making and maintaining this project, it seems great!

Given the following:

const Y = require('yjs')
newDoc = new Y.Doc()

doc = newDoc.getMap('patches') 

doc.set('patch', 
  {"people": 
    {"michael": 
      { "lastname": "smith",
        "height": "tall"
      },
    "sal": 
      { "lastname": "orange",
        "height": "small"
      }
    }
  })

In vanilla js, to dynamically update a property I could do:

let name = 'sal'
let prop = 'height'
people[name][height] = 'short'

How would I do this same operation in Yjs? I know that issue #11is similar, but does not discuss dealing with nested and dynamic properties.