title: Scala random number in a string
body: <pre><code>val scn = scenario("newUser")
      .exec(http("request_0")
          .get("/wordpress/?page_id=83")
          .headers(headers_0))
      .pause(1)
      .exec(http("request_1")
          .post("/wordpress/?page_id=83")
          .headers(headers_1)
          .body(RawFileBody("new_user_request_0001.txt")))
  
  setUp(scn.inject(atOnceUsers(100))).protocols(httpProtocol)
  </code></pre>
  
  <p>My question is the following... I have to load 100 text files with structure like that in the example ("new_user_request_0001.txt"), using numbers between 0 to 100 randomly. How can I do? Thank you all</p>