Datadog and many dataseries stacked together

Recently, I've started to use Datadog. It has nice features, but I have also found some annoying lacks. One of them is no easy way to prepare a graph with a stack of different series in one graph, for example nice representation of CPU time spent in different states.

Luckily, as you can see above it can be done. You just need to change some things in JSON and have something similar to what I got below. The main point is to have all dataseries in the argument of one "q".

{
  "viz": "timeseries",
  "requests": [
    {

      "q": "avg:system.cpu.system{host:host-01}, avg:system.cpu.user{,host:host-01}, avg:system.cpu.iowait{host:host-01}, avg:system.cpu.stolen{host:host-01}, avg:system.cpu.idle{host:host-01}",
    },
      "type": "area"
  ],
  "events": []
}