OS (e.g. Win10): MacOS 10.14.6 PsychoPy version (e.g. 1.84.x): 2020.2.4 Standard Standalone? (y/n) If not then what?: y What are you trying to achieve?: implement a break Hi all, I know this problem has been coming up over and over, but I can’t find a solution. The fields trials.thisN and tria…

There have been some changes in how loop variables work in newer versions of PsychoJS. Try using this variable instead: snapshot Now, it will have most properties you’re after (like snapshot.thisN), but there is some room for improvement, since it doesn’t have all the properties that PsychoPy offe…

Hey @treelen , sorry to hear PsychoJS is giving you trouble, would it be possible to let me access your repo or send me a .psyexp so that I can investigate a bit further? Here to help, thanks, s.

I think it’s a new bug in 2020.2 I can’t get .thisN to work either. [image] trials.thisN / currentLoop.thisN no longer working in 2020.2.3? Online experiments The next error I’m trying to fix seems to be related to a failure in .thisN I’m trying to present a list of wor…

Thank you for your answers. Would you have any suggestion to bypass the problem?

Hi @thomas_pronk , is this something the dev team are aware of? There might have been long-standing loop-related issues, but getting consistency between the desktop and online versions would be important for this functionality.

I wasn’t aware of this. Thanks for the headsup @wakecarter and @Michael . I think there are a couple of lessons to be learned here; I’ll first do a pitch in our daily before going deeper.

Meanwhile I found a list of standard attributes over here: https://www.psychopy.org/api/data.html#psychopy.data.TrialHandler I already built an e2e test for looping; I’ll add checks for these attributes in this test.

@wakecarter , we’d like to be sure whatever you address gets picked up by us promptly; be welcome to get directly in touch (via e-mails or our Teams workspace)

I think we’re being bit by the same problem. We are trying to set a stimulus based on a list whose length is the same as the number of trials. Is there any update on this issue? (Sorry if I failed to find a relevant post.)

What version are you using? This may have been fixed in 2021

We were using v.2021.1.2. I updated to v2021.1.4. The behavior still seems to be the same. Here’s the web console log: TypeError: graphs[trials.thisN] is undefined trialRoutineBegin https://run.pavlovia.org/jzacks/exp2002_jz/html/Exp2002_1_210407.js :696 _runNextTasks https://run.pavlovia.org/jzac…

trials.thisN and trials.thisTrialN are constant in the online experiment

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wakecarter October 4, 2020, 1:16pm 4

I think it’s a new bug in 2020.2

I can’t get .thisN to work either.

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trials.thisN and trials.thisTrialN are constant in the online experiment

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