BTW - this problem is quite old, before SM2 even, I think (the trouble with the 'Append' is just an instance of the same problem with a new primitive). I've sent Malc a reminder to look into it for the next update.
Feel free to use any schematics and algorithms I post on the forum in your own designs - a credit is appreciated (but not a requirement).
Don't stagnate, mutate to create. Without randomness and serendipity the earth would be just another barren rock.