TurboGlider wrote: If your start and ens points are directly connected to A, then you dont need movable hotspots.
I can always use "A....dimension 1" field on the Info Box to change the lenght of the tube.
With this hotspot (diamond) on the end point I can Rotate and Stretch the tube within 1 operation; and then the field "A" show the right lenght. But after that the "Move node" icon for stretching the start point of the tube disapears!
If I use "Rotate" icon on the start point and rotate the tube, after that the "Move node" icon is still available!
Is this problem connected to the coordinate system?