Use a variable for the conditions file path on pavlovia

[wakecarter]

You either need to attach all possible filepath_conditions files in Experiment Settings / Online

Alternatively you can use prepareResources to attach the required file on the fly.

Unable to retrieve image when image name is code generated

Uploaded to the server is different from made available to the experiment during the run. The code to do this is: psychoJS.serverManager.prepareResources([ { 'name': fileName, 'path': folderName+'/'+fileName, 'download': true } ]); You can create a list of these dictionaries (using append/push) and give them to prepareResources in a single step.