translate Z axis

so the translate method offers an argument for an amount to move in the z direction. but when I try to set something for that argument, it seems to be ignored. for example.

var b1 = Titanium.UI.create3DMatrix().translate(100,100,100); button.animate({transform:b1,duration:2000});

moving the object 100 in the x, 100 in the y and 100 in the z.

I'm pretty new to Titanium, but I've done 3d stuff in webkit, figured that it was supposed to show a similar rendering.

thanks for an clarifications.