mongodb update a key to all documents using forEach
<p>I want to update in <code>Mongo</code> the 'order' field to all of my documents so they will be 1..2..3..4....34.</p>
<p>After running this, they all have &quot;order&quot;: &quot;34&quot;.
What am I doing wrong?</p>
<pre><code>var i = 1;
db.images.find().forEach(function() {
    db.images.update(
        {},
        { &quot;$set&quot;: {&quot;order&quot;: NumberInt(i)} },
        { multi: true }
    );
    i++;
})
</code></pre>