Howdy, Stranger!

It looks like you're new here. If you want to get involved, click one of these buttons!

Supported by

Set random value with inline

Hallo all,

i am new to OpenSesame, and am trying to programme an experiment in which participants choose an urn - A or B - nad based on which urn they choose, a colour - blue or red - is randomly selected.

So far i have a custom form with two buttons for A and B. After the custom form i have an inline which should do the following:

  • shuffle two lists - one for each urn
  • randomly pick an number from 0 to 9 and store it in the variable 'pick'
  • pick a value, i.e. colour, from the urn list depending on whether participants previously clicked on A or B and store it in the variable 'marble'

Unfortunately this inline does not work. I logged the pick and the marble variable, but the inline does not seem to work, since the pick variable always shows up as 0 and the marble variable remains emplty.

I have added screenshots of the inline below. A copy of the experimental file is also attached, incase that might help.

I wold be very greateful for any help.

Thanks :-)


  • Hi tasi,

    can you try again, but replace pick=randint(0, 9) with var.pick=randint(0, 9)

    and likewise marble=urne[var.pick]

    Does that solve the problem?


    Buy Me A Coffee

  • Hi eduard,

    thanks for you reply. I tried it the way you suggested, but it doesn't work either. The marble variable is still emplty and the pick variable zero in the excel output/logfile.



  • Hi Tasi,

    See the attached experiment. The form response was not collected the way you thought. Hope this helps.


    Buy Me A Coffee

  • FabFab
    edited June 2022

    Hi @tasi,

    I'm not familiar with forms but I believe that your code presents a couple of problems...

    (1) Use var.form_response instead of form_response. If you print response_form to the console, you'll see that OS tells you that this variable does not exist.

    (2) If you'd like the picked marble to be saved in a variable you can use outside the Python code object, use var.marble instead of marbe.

    I simplified your code below and it seems to work:

    import random
    if var.form_response == "A":
         var.marble = urne_a[pick]
    elif var.form_response == "B":

    I attached a modified version of your task where I display the value of marble on a feedback sketchpad. To make sure that the marble is selected from urne_a or urne_b correctly, I labelled the elements of these differently (blueA1, blueA2, etc. Just to check it is working. Just change it back to the initial values.

    Hope this helps!


    Buy Me A Coffee

  • Hey Eduard,

    thanks so much. this works! the data file now shows values for the 'pick' and 'marble' variables. Thank you :-)

    I do have another question, if that is okay, i want to use the 'marble' variable on the next screen in some text to let the participants know what colour they picked. according to this documentation ( should be enough to include the variable in square brackets. however when i do that nothing appears. if i use [var.marble], then '[var.marble]' shows up as a text string.

    i am wondering if i am perhaps calling the variable incorrectly?

    Cheers, and thanks again for your help :-)


  • hey @•Fab

    sorry i didn't see you post before my reply above. thanks for your help! showing the value of marble is exactly what is want to do, so thanks yo much.

    please ignore my previoous post!

    thanks :-)

  • edited June 2022

    Use [marble] instead of [var.marble]

    And use a feedback item instead of a sketchpad

    Buy Me A Coffee

  • @Fab and @eduard

    thank you both so much for your help! it works now :-)



Sign In or Register to comment.

agen judi bola , sportbook, casino, togel, number game, singapore, tangkas, basket, slot, poker, dominoqq, agen bola. Semua permainan bisa dimainkan hanya dengan 1 ID. minimal deposit 50.000 ,- bonus cashback hingga 10% , diskon togel hingga 66% bisa bermain di android dan IOS kapanpun dan dimana pun. poker , bandarq , aduq, domino qq , dominobet. Semua permainan bisa dimainkan hanya dengan 1 ID. minimal deposit 10.000 ,- bonus turnover 0.5% dan bonus referral 20%. Bonus - bonus yang dihadirkan bisa terbilang cukup tinggi dan memuaskan, anda hanya perlu memasang pada situs yang memberikan bursa pasaran terbaik yaitu Bola168. Situs penyedia segala jenis permainan poker online kini semakin banyak ditemukan di Internet, salah satunya TahunQQ merupakan situs Agen Judi Domino66 Dan BandarQ Terpercaya yang mampu memberikan banyak provit bagi bettornya. Permainan Yang Di Sediakan Dewi365 Juga sangat banyak Dan menarik dan Peluang untuk memenangkan Taruhan Judi online ini juga sangat mudah . Mainkan Segera Taruhan Sportbook anda bersama Agen Judi Bola Bersama Dewi365 Kemenangan Anda Berapa pun akan Terbayarkan. Tersedia 9 macam permainan seru yang bisa kamu mainkan hanya di dalam 1 ID saja. Permainan seru yang tersedia seperti Poker, Domino QQ Dan juga BandarQ Online. Semuanya tersedia lengkap hanya di ABGQQ. Situs ABGQQ sangat mudah dimenangkan, kamu juga akan mendapatkan mega bonus dan setiap pemain berhak mendapatkan cashback mingguan. ABGQQ juga telah diakui sebagai Bandar Domino Online yang menjamin sistem FAIR PLAY disetiap permainan yang bisa dimainkan dengan deposit minimal hanya Rp.25.000. DEWI365 adalah Bandar Judi Bola Terpercaya & resmi dan terpercaya di indonesia. Situs judi bola ini menyediakan fasilitas bagi anda untuk dapat bermain memainkan permainan judi bola. Didalam situs ini memiliki berbagai permainan taruhan bola terlengkap seperti Sbobet, yang membuat DEWI365 menjadi situs judi bola terbaik dan terpercaya di Indonesia. Tentunya sebagai situs yang bertugas sebagai Bandar Poker Online pastinya akan berusaha untuk menjaga semua informasi dan keamanan yang terdapat di POKERQQ13. Kotakqq adalah situs Judi Poker Online Terpercayayang menyediakan 9 jenis permainan sakong online, dominoqq, domino99, bandarq, bandar ceme, aduq, poker online, bandar poker, balak66, perang baccarat, dan capsa susun. Dengan minimal deposit withdraw 15.000 Anda sudah bisa memainkan semua permaina pkv games di situs kami. Jackpot besar,Win rate tinggi, Fair play, PKV Games