No attribute named 'id' is defined even through I set it as a session attribute

Gatling (Open-Source)
1

Im getting No attribute named ‘id’ is defined

this is my code

val scn = scenario("Auto Save Load Test")
  .exec(
    http("Getting entry")
      .put("")
      .check(status.is(201), jsonPath("$").saveAs("entry")))

  .exec(session => {
  val textEntry = session("entry").as[Entry]
  val updated = textEntry.copy(title = "This is the title set in the gatling test")
  session.set("entry", updated).set("id", updated.id.toString)})

  .exec(
    http("Setting title")
      .post("/${id}")
      .body(StringBody( """${entry}""")).asJSON
      .check(status.is(200), jsonPath("$").saveAs("entry")))

setUp(
  scn.inject(atOnceUsers(1)).protocols(httpConfig)
)

Can someone please tell me what I am doing wrong

2

I would say your jsonPath is not retrieving any value.

Test it here. https://jsonpath.curiousconcept.com/