Windows Phone live tile WITHOUT plugins

How do we implement live tile in windows phone? I have searched about it and found :

 #if UNITY_METRO
  UnityEngine.WSA.Tile liveTile = Tile.main;
  //then we update the tile with our latest high score
  //the first three strings are for images (medium,wide,large)
  //the last string is for text to display
  //you can also pass in an XML file to describe the tile
  liveTile.Update("","","", "Best round time: " + PlayerPrefs.GetInt("angka", 0));
 #endif

But I can't get it working? is there anything else to change in visual studio project? thanks.