How to use Meteor Upsert

Question

Having a bit of trouble getting my Meteor upsert function working. I am fairly (200 lines of code) new, and I\'m having a bit of trouble.

The collection keeps on having

Answer 1

Figured it out through trial and error:

Values.upsert({
    // Selector
    source: "SourceOne",
    currency: "USD"
}, {
    // Modifier
    $set: {
        value: res.data['data']['last']['value'],
        time: Date.now() // no comma needed here
    }
});