How to update a flatten tube when changing tube height

Good Morning everyone
I am trying to update a flatten drawing (2D drawing) which is automatically created based on tube size numeric input. Attached is what I have so far. Is it possible for you to look at it and let me know what I am missing? The 3D tube works well, the flatten drawing works well except when I draw my laser lines on the 3D tube. The upper line inside the tube (Laser line) wont update.
I started learning grasshopper (about two weeks ago) by looking at videos and online tutorials. I love the program and can’t stop practising with it. Obviously I still have a lot to learn and this may not be the best configuration but for me, It is a start point. :slight_smile:
Thank you in advance for any help you provide to me. Please take a look at attached