I am trying to use the Transfer Module, I populate the transfer module with data from my database and this all works and I can move the data between the source and target.

I want to catch those changes so i can update the database with the changes.

So I can use the e.sentItems to catch the data being sent, how do I determine which direction it has been sent? Also with the dataSource/dataTarget options can we specify our own ID or add additional fields so when the e.sentItems is used we can catch more of the data?

transferEl.addEventListener('onChange.mdb.transfer', (e) => { console.log(e.sentItems) })