"Android mode is not compatible with this revision of Processing"

Hi.

I wanted to get started with this function, but I cannot install it, but when I put the AndroidMode folder in "modes" and I try to select it in Processing, it says that it's not compatible. I definitely don't know why because it seems a simple process and I checked some guides trying to solve this.

Any idea about what should I do? I use Processing 3.0a5 and, of course, I tried other versions, but the same problem appears. A screenshot: http://s1323.photobucket.com/user/Anti_2/media/processingandroid_zpsuruchl32.png.html

Thank you.