Exporting Variables into a Google Spreadsheet

Thanks for the great tutorial.

a) Will it work for concurrent users ? I have several users taking the course at same time ?Will it create a seperate row in Google Spreadsheet for each user ? or overwrite in the same row ?

b) The most important aspect i want is that the same row in the sheet should be used for a particular user for that specific attempt / session. Not create a new row for the same session whenever the javascript trigger is executed in Storyline. The JS trigger is set on each question slide to keep track where the user has left the course if he/ she exits the course halfway without completing it. Currently it creates a new row for each question.