Brilliant thanks for the quick reply.
It was giving me a headache. I had tried with event only cables but Allow Changes is 100% what I was missing!
As for the challenge of making it a solid and adding leaves, I have done some interesting tests with other 3D objects which build succulent/cacti type forms.
I'll endeavour to find a way to make it work with something similar to the method that I used in Cylinder Snakes
Lots I'd like to improve and add to this though and I would really appreciate some help.
Firstly I've been trying to automate the growth rather than using a mouse click.
How can I set-up a limited queue of events?
Fire periodically and Count within range does not seem to be working for that.
I've been reading and re-reading the manual on the subject but having trouble understanding Build lists, Queues, and Hold lists. (I always did have issues understanding Iterators in Qtz too, it's just an alien abstract mathematical thing my brain has issues with).
Second I'd like to add leaves or flowers to the structure and also make it a solid rather than line object, can't work that out either yet.