Sadly, there's no way of doing this, even if you look in bungies JS file, they did a wrapper call that does one transfer and then the other one if the first one succeed. And as nmlorg is doing, i'm also doing a bungie api wrapper, but, this is for Android, i'm almost done with all the basic things, and, i'll be publishing it public and announcing it here in a couple of days, so that people can also add to it, and developers can have a better jump start :)