How to use Config Manual data within Script

[bartonhammond]

In the code below I identified one piece of data, the course_id with value of 719.

At run time I expected the url in the first step to have the variable ${course_id} replaced w/ the 719 value.

But instead I get message "Variable not set: course_id"

{
  "type": "script",
  "seleniumVersion": "2",
  "formatVersion": 2,
  "steps": [
    {
      "type": "get",
      "url": "https://foobar/${course_id}"
    }
  ],
  "data": {
    "configs": {
      "manual": {
        "course_id": 719
      }
    },
    "source": "manual"
  },
  "inputs": [],
  "timeoutSeconds": 60
}