I'm making an update to one of the documents in my collection, which has quite a large number of fields.

I want to write an event that allows me to update only one specific field in this document.

But using the update method requires that I specify all current field values as parameters, otherwise the update removes them.

var gameData = Spark.runtimeCollection('gameData');
gameData .update({"id":id}, {"status":status});

So what happens here, is the whole document is updated, but now it only has a status field, and all other fields are removed.

How do I only update the status field? I've tried setting the 'upset' parameter on update to true as well, but this makes no difference.

use $set

var gameData = Spark.runtimeCollection('gameData');
gameData.update({"id":id}, {$set:{"status":status}});