Failed to change Data filename

The online data filenames seem to have a default way:** filename = thisDir + os.sep + u’data/%s%s_%s’ % (expInfo[‘participant’], expName, expInfo[‘date’])

I want to turn “participant” into “Number” so that participants can understand it better. Also, I want to change the data file name synchronously so that I can manage my data without chaos.
Thus, I have changed “Experiment Settings >Basic tab > Experiment inf” and “Experiment Settings > Data tab > Data filename field”. Also, I checked my .py document. They are:

However, the data filenames remain to be the default “participant” instead of the “number” that I have set. I am very confused how to tackle with this question.

Thanks a looooot if you can help me!

You can’t (currently) change the default data filename in Pavlovia so I would recommend sticking with participant. You can use my VESPR Study Portal or previous tool to assign a consecutive value for participant if you’d rather your participants didn’t even get asked the question.