I'm trying to create a capped collection using Mongoose, however the following creates a collection that is not capped:

```js
var schema = new mongoose.Schema(
{
    Name: { type: String },
    Text: { type: String }
},
{
    capped: { max: 5, size: 1000000 }
});

```

I'm pretty sure I'm following the documentation's example properly, but clearly I'm doing something wrong.