# AtomicInteger is 10? **URL:** \ **Category:** Gatling (Open-Source)\ **Created:** [July 22, 2014, 9:21am UTC](https://community.gatling.io/t/atomicinteger-is-10/1199 "2014-07-22T09:21:28Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![Andrei\_Proskurin](https://avatars.discourse-cdn.com/v4/letter/a/977dab/32.png) [@Andrei\_Proskurin](https://community.gatling.io/u/Andrei_Proskurin)\ **Post date:** [July 22, 2014, 9:21am UTC](https://community.gatling.io/t/atomicinteger-is-10/1199/1 "2014-07-22T09:21:28Z")
When I create new instance of: val deleteCounter = new AtomicInteger() and then check its value, it is 10, but not 0. What could be the problem? ---
**Author:** ![Michelle\_Burrows](https://avatars.discourse-cdn.com/v4/letter/m/a6a055/32.png) [@Michelle\_Burrows](https://community.gatling.io/u/Michelle_Burrows)\ **Post date:** [July 22, 2014, 12:14pm UTC](https://community.gatling.io/t/atomicinteger-is-10/1199/2 "2014-07-22T12:14:40Z")
Can you post a minimal working example that reproduces the problem? ---
**Author:** ![Andrei\_Proskurin](https://avatars.discourse-cdn.com/v4/letter/a/977dab/32.png) [@Andrei\_Proskurin](https://community.gatling.io/u/Andrei_Proskurin)\ **Post date:** [July 22, 2014, 12:37pm UTC](https://community.gatling.io/t/atomicinteger-is-10/1199/3 "2014-07-22T12:37:18Z")
val deleteCounter = new AtomicInteger() def incNumber = deleteCounter.getAndIncrement def incNumber = { //Function takes deleteCounter and increments it for each session exec((session: Session) =\> { deleteCounter.getAndIncrement session })} .exec(http(“HomePage”).get("/").check(regex("""\Delete._""").saveAs(“myUrl1”)).pause(3) So this script goes to my home page and from the response fetches the page to go next. There is a list of options and I need every user to go on a different page. The regex is ok, I controlled it using regex tester. The page URL looks like: …delete-1-dec… …delete-2-dec… and so on. So I put a function that increments this number for each session. The problem is that instead of “delete-1-dec” I get “delete-10-dec”. And the second problem that it doesn’t increment at all. ---
**Author:** ![Michelle\_Burrows](https://avatars.discourse-cdn.com/v4/letter/m/a6a055/32.png) [@Michelle\_Burrows](https://community.gatling.io/u/Michelle_Burrows)\ **Post date:** [July 22, 2014, 12:46pm UTC](https://community.gatling.io/t/atomicinteger-is-10/1199/4 "2014-07-22T12:46:52Z")
Where you have this: “”“declarations-\d[”""+incNumber+ “”"]-delete""" your regex is matching a number with \d, then your AtomicInteger’s value. Assuming you’ve got a list that counts up from 0, the smallest value that will match this pattern when deleteCounter is 0 is 10. If you want to just match deleteCounter, get rid of the \d and it should be fine. ---
**Author:** ![Michelle\_Burrows](https://avatars.discourse-cdn.com/v4/letter/m/a6a055/32.png) [@Michelle\_Burrows](https://community.gatling.io/u/Michelle_Burrows)\ **Post date:** [July 22, 2014, 12:49pm UTC](https://community.gatling.io/t/atomicinteger-is-10/1199/5 "2014-07-22T12:49:54Z")
NB In the future, if you want to check the value of something, you can use something like this (using deleteCounter as an example, here) .exec(session =\> { println(deleteCounter) session }) That way you know for sure you’re seeing the real value and there isn’t a problem with some other code. ---
**Author:** ![Andrei\_Proskurin](https://avatars.discourse-cdn.com/v4/letter/a/977dab/32.png) [@Andrei\_Proskurin](https://community.gatling.io/u/Andrei_Proskurin)\ **Post date:** [July 22, 2014, 1:00pm UTC](https://community.gatling.io/t/atomicinteger-is-10/1199/6 "2014-07-22T13:00:00Z")
Thank you! That fixed it. But what about the incrementation. How can I define incNumber so it would increment for each session. At the moment every user clicks the same url (with the same counter) ---
**Author:** ![Michelle\_Burrows](https://avatars.discourse-cdn.com/v4/letter/m/a6a055/32.png) [@Michelle\_Burrows](https://community.gatling.io/u/Michelle_Burrows)\ **Post date:** [July 22, 2014, 1:30pm UTC](https://community.gatling.io/t/atomicinteger-is-10/1199/7 "2014-07-22T13:30:21Z")
val deleteCounter = new AtomicInteger() .exec(http(“HomePage”).get("/").check(regex("""\ deleteCounter.getAndIncrement + “”"]-delete)"\>Delete._""").saveAs(“myUrl1”)).pause(3) Should execute every time ---
**Author:** ![Andrei\_Proskurin](https://avatars.discourse-cdn.com/v4/letter/a/977dab/32.png) [@Andrei\_Proskurin](https://community.gatling.io/u/Andrei_Proskurin)\ **Post date:** [July 22, 2014, 1:37pm UTC](https://community.gatling.io/t/atomicinteger-is-10/1199/8 "2014-07-22T13:37:44Z")
This method looks a bit more complicated. I have these functions: def getIt(requestTitle: String, requestURL: io.gatling.core.session.Expression[String], pause: Int, pattern: String, urlName: String) = { exec(http(requestTitle).get(requestURL).check(regex(pattern).saveAs(urlName))).pause(pause) } def goHome (pattern: String, saveUrl: String) = { getIt(“HomePage”, “/”, 2, pattern, saveUrl) } def goHomeDelete = { goHome( “”"\ deleteCounter.getAndIncrement + “”"-delete)"\>Delete.\*""", “deleteUrl1” ) } It doesn’t compile: error: not a legal formal parameter ---
**Author:** ![Andrei\_Proskurin](https://avatars.discourse-cdn.com/v4/letter/a/977dab/32.png) [@Andrei\_Proskurin](https://community.gatling.io/u/Andrei_Proskurin)\ **Post date:** [July 22, 2014, 2:07pm UTC](https://community.gatling.io/t/atomicinteger-is-10/1199/9 "2014-07-22T14:07:55Z")
I set up the counter as a session attribute manually and it worked. However I also tried it and it didn’t work earlier. Could you please tell me what is the difference between: .exec(session =\> session.set(“myCounter”, deleteCounter.getAndIncrement)) and .exec((session: Session) =\> { session.set(“myCounter”, deleteCounter.getAndIncrement) session }) ---
**Author:** ![Michelle\_Burrows](https://avatars.discourse-cdn.com/v4/letter/m/a6a055/32.png) [@Michelle\_Burrows](https://community.gatling.io/u/Michelle_Burrows)\ **Post date:** [July 22, 2014, 5:16pm UTC](https://community.gatling.io/t/atomicinteger-is-10/1199/10 "2014-07-22T17:16:02Z")
Session is immutable, so in your second exec, when you call session.set(), it returns a new Session that you don’t do anything with, and then you’re returning the original Session.