I’d like my experiment (run on pavlovia, interfacing with sona) to automatically assign a participant number, based on how many participants have completed the experiment. In other words, I want the first participant to be assigned participant number 1, and the next participant to be assigned participant number 2 (unless participant 1 failed to complete), and so on. I understand that it’s possible to incorporate participant IDs into links from sona, but unless I’ve missed something, those have to be hard coded rather than increment with experiment completions. Can anyone point me in the right direction? Thanks for reading!