{
  "StartAt": "p",
  "States": {
    "p": {
      "Type": "Task",
      "Resource": "foo:bar",
      "ResultSelector": {
        "random.$": "States.MathRandom($.start, $.end)",
        "addition.$": "States.MathAdd($.value1, $.step)"
      },
      "End": true
    }
  }
}