trying to create an illustrator script to create new document, but can't set the doc profile

Salut!

Moi j'utilise:

var doc = documents.addDocument("Vidéo et Film",app.getPresetSettings("Vidéo et Film"));

ou
var index = 11;
var doc = documents.addDocument(startupPresetsList[index],app.getPresetSettings(startupPresetsList[index]))

var presetsList = [];
  for (i = 0; i < startupPresetsList.length; i++) {
    presetsList[i] = [i,startupPresetsList[i]];
  }
  alert("Repèrez bien l'index !!\r\r"+presetsList.join('\r'));
var index = prompt("Index presetlist",0);
  alert("Votre choix: "+presetsList[index][1]);

var doc = documents.addDocument(presetsList[index][1],app.getPresetSettings(presetsList[index][1]));