new GPolyline.fromEncoded({
  color: "#0000ff",
  weight: 4,
  opacity: 0.8,
  points: "a}{{H}ruD`oDhkBfH_]jm@qaAzRip@h@yeArEa@pNw_@|HkD^tHrHp]wB|Ca@T_BKcCtCmA|A",
  levels: "PJEEGFEEHCFDBC?P",
  zoomFactor: 2,
  numLevels: 18
});