title: Prefill a Google Form using data from the last response
body: <p>I am building a Google Form that I am the only one to use. I use the form 2 times a day (more or less) and I would like some of the fields to be prefilled with the value of the last response I gave, because their values are not suppose to change often.</p>
  
  <p>I save my responses in a google spreadsheet so I could get them from there but I am very new to Google Apps Scripts and I haven't seen an event that triggers when someone opens a form to answer it yet. I'm not even sure such an event exists... </p>
  
  <p>And also, I would like to access my form from always the same URL (so no prefill that way) because I saved the URL as a favorite on my smart-phone's desk and don't want to change it every day :)</p>
  
  <p>So, is there a way to prefill a Google Form using data from the last response or at least <strong>an event that triggers when answering the Form</strong> ?</p>
  
  <p>Thanks in advance</p>