# Guide for the new counterbalancing routine?

**URL:** <https://discourse.psychopy.org/t/guide-for-the-new-counterbalancing-routine/39632>\
**Category:** Online experiments\
**Tags:** counterbalancing, shelf\
**Created:** [April 15, 2024, 9:45pm UTC](https://discourse.psychopy.org/t/guide-for-the-new-counterbalancing-routine/39632 "2024-04-15T21:45:55Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Pippo](https://avatars.discourse-cdn.com/v4/letter/p/ebca7d/32.png) [@Pippo](https://discourse.psychopy.org/u/Pippo)\
**Post date:** [April 15, 2024, 9:45pm UTC](https://discourse.psychopy.org/t/guide-for-the-new-counterbalancing-routine/39632/1 "2024-04-15T21:45:55Z")

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Hi,  
I´m quite new to Pavlovia. Somewhen in the last weeks my online experiment stopped working. Thanks to the forum I figured out that this was because of the survey component in Psychopy (participants start my experiment with a build in survey component, which did not end, thus stopped the real experiment to begin). Updating my version to now the newest version (v2024.1.1) helped, but now I got a new problem regarding counterbalancing. Before the newest version I was able to counterbalance my experiment by using the “older” counterbalancing function via the shelf. This function does not work any longer and thus, I would like to use the new counterbalance routine. As I am quite new to Pavlovia I don’t really know how to do this. Is there maybe a guide on how to use this new function, or does someone already have experience with it?

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**Author:** ![Pippo](https://avatars.discourse-cdn.com/v4/letter/p/ebca7d/32.png) [@Pippo](https://discourse.psychopy.org/u/Pippo)\
**Post date:** [April 17, 2024, 5:28pm UTC](https://discourse.psychopy.org/t/guide-for-the-new-counterbalancing-routine/39632/2 "2024-04-17T17:28:05Z")

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Url: [emotion\_recognition\_task [PsychoPy]](https://run.pavlovia.org/philipp_student/emotion_recognition_task)  
I found out that I can counterbalance my online experiment with the tool develope by Wakefield Morys Carter (if you read this: thank you very much). Before that I used the shelf with “my\_groups” as key and code regarding to this in my experiment. I deleted both as I don t need them anyl onger in my newer version. Interestingly I get following message:  
 ![image](https://us1.discourse-cdn.com/flex002/uploads/psychopy/original/3X/2/2/2226394d003d750c7c418b0e73d2ca9e6c5e1900.jpeg)  
and the experiment doesn’t start.  
But after cleared my cache it suddenly worked. I suspect that participants who tried to open the older version cannot open the newer version, but I don’t understand why and how this is related to the browser cache. Does somebody have an idea?

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**Author:** ![wakecarter](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.psychopy.org/wakecarter/32/5753_2.png) [@wakecarter](https://discourse.psychopy.org/u/wakecarter)\
**Post date:** [April 17, 2024, 6:28pm UTC](https://discourse.psychopy.org/t/guide-for-the-new-counterbalancing-routine/39632/3 "2024-04-17T18:28:06Z")

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When developing experiments online I either reload with Ctrl-Shift-R in Chrome or use an incognito tab to view the latest version of the experiment.

If you have participants who have seen an earlier version, I would recommend asking them to use an incognito tab.