# How to carry over participant IDs from one Pavlovia project to another

**URL:** <https://discourse.psychopy.org/t/how-to-carry-over-participant-ids-from-one-pavlovia-project-to-another/25258>\
**Category:** Online experiments\
**Created:** [October 6, 2021, 5:29pm UTC](https://discourse.psychopy.org/t/how-to-carry-over-participant-ids-from-one-pavlovia-project-to-another/25258 "2021-10-06T17:29:44Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![jfranc](https://avatars.discourse-cdn.com/v4/letter/j/919ad9/32.png) [@jfranc](https://discourse.psychopy.org/u/jfranc)\
**Post date:** [October 6, 2021, 5:29pm UTC](https://discourse.psychopy.org/t/how-to-carry-over-participant-ids-from-one-pavlovia-project-to-another/25258/1 "2021-10-06T17:29:45Z")

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URL of experiment: [ConditioningTask\_v4.3\_1010Hz\_7.21.21\_jg\_jf [PsychoPy]](https://run.pavlovia.org/jaf2105/c_1010a)

Description of the problem: I am trying to carry over participant IDs from one Pavlovia project to another. I added + expInfo[participant] to the end of my URL, however when the initial task ends I get a 404 Not Found message.

Thanks!

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**Author:** ![jgeller112](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.psychopy.org/jgeller112/32/9835_2.png) [@jgeller112](https://discourse.psychopy.org/u/jgeller112)\
**Post date:** [October 6, 2021, 8:04pm UTC](https://discourse.psychopy.org/t/how-to-carry-over-participant-ids-from-one-pavlovia-project-to-another/25258/2 "2021-10-06T20:04:52Z")

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I think it needs to be: expInfo[‘participant’]

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**Author:** ![jfranc](https://avatars.discourse-cdn.com/v4/letter/j/919ad9/32.png) [@jfranc](https://discourse.psychopy.org/u/jfranc)\
**Post date:** [October 12, 2021, 4:13pm UTC](https://discourse.psychopy.org/t/how-to-carry-over-participant-ids-from-one-pavlovia-project-to-another/25258/3 "2021-10-12T16:13:44Z")

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I was able to get it by doing below:

`$"https://run.pavlovia.org/jaf2105/post-tone-discrimination-2/?participant=" + expInfo['participant']`