A little Tutorial in how to with a workaround, be able to use a Nurbs Curve´s Min/Max Sliders to update its Mesh !

1. 'Front View', Grid & Snap ON
2. Create a Nurbs Circle in Middle of View, at 0
3. 'Top View'
4. Create a Nurbs Curve, 10 Points Using the Grid ( Make sure the 'Nurbs Circle' is selected )
   ( Set PEN --> Sweep ! )
5. Click + on the Created Mesh
   ( Select the Second of the Construction Curves inside the Mesh "nurbs40" )
6. Press 'Ctrl + c Keys' and after that use 'Ctrl + v Keys'
   ( This to get a copy of the Path Curve, to use as an Lattice )
7. Select Mesh + the newly Copied curve, Press 'd Key'
   ( To Drop them to a New 'Level' )
8. Double Click the new 'Level' and rename it as "Template", Click its +
   ( Also Rename the Copied Curve to "Lattice" )
9. Select Both Construction Curves inside the Mesh + "Lattice" Curve ( in this order! )
10. Use 'Map Tool' ( in 'Lattice Mapping Tab' ) ( Mapping Mode --> Pointwise )
    ( This lets you now to Control the Tube Mesh in a number of ways )
    ( Like using the "Lattice" Curves Min/Max Settings in its 'Spec Tab' )
11. Double Click "Lattice" to open 'Property Window', Click 'Spec Tab'
    ( Change the Min/Max Slider and see the Tube Mesh Smoothly follow ! )
    ( After testing Min/Max reset it to Min = 0, Max = 1 )
    ( Now we have a working Template Min/Max Level...that we can use to Create many types of Tubes )
12. Now make a Copy of the "Template" Level and rename it as "Tube"
13. Also Select the "Template" Level and set RT and WF invisible ! ( To hide it temperarily )
14. Select "Tube" Level, and Press 'Tab Key' ( This Makes "Tube" the 'Current Level' )
    ( It shows up as an Orange Arrow, to the left of "Tube" Level )
    ( So Next Curve we will create will end up into "Tube" Level ! )
15. Create a new Nurb Curve, that you want to, and rename it as "New Path"
    ( You can create whatever curve you like, and Where ever you want in RS 3D universe ! )
    ( For best results keep points evenly spread )
    ( Also see to that the 2nd Construction curve, in this case "nurbs40" has at least as many points )
    ( as the Wanted newly created curve....!, in this case "New Path", Before you map it )
16. Now Select Both Construction Curves inside the Mesh + "New Path" ( Press SHIFT to MultiSelect )
    ( Its important that "New Path" is Selected Last ! )
    And Use 'Reconnect Tool' ( In 'Lattice Mapping' Tab )
    ( Now the Mesh´s Construction Curves are based on "New Path" and you can use "New Path"´s Min/Max or edit it in any way )
    ( Note that at this stage, you can if you like put Many different "Path" Curves into a "Paths" Level inside "Tube" Level )
    ( To have fast n easy access to many Predefined Path Curves, and use this Reconnect as described above )
    ( Down to right, it has been Reconnected to "20 Points Path", Set at least "nurbs40"´s points to 20 ( in Property Windows 'Spec Tab' )
    ( You can experiment with different point count for special purposes and styles )
    ( and/or change both Construction Curves´s with Elev n Reduce Tools, to get smoother or Poly lookin Mesh, as below right )
17. Now if not already, Select Root Level, and set it to 'Current Level' by Pressing 'Tab Key'
18. Select "Tube" Level and set it to 'RT and WF invisible', and Click its - to close that level
19. Select "Template" Level, and Copy it !, rename the copy to "New Profile"
20. Reset "New Profile"´s RT and WF ! so we can see it..and open its structure up, Click its +
21. 'Front View' and Select and Drag n Drop "New Path" Level into the 'View Window' ( so you see the Circle Profile )
22. Start the "Curve Tool', Set it´s 'Closed' Option, and make the Pointy Looking Profile like the one showed up n right.
    ( At Red Dot in Middle the points 1,3,5,7,9,11,13,15,17 will be placed !, When Placed last point 18, Accept the Curve Tool... )
    ( Rename it as "Pointy Profile" )
23. Drag n Drop the Selected "Pointy Profile" and release Mouse button when hovering over "nurbs38" Curve !
    ( After that Delete "nurbs38" !, Now the Mesh uses the new Profile, but is not yet ready for Min/Max Editing )
24. Select "Pointy Profile" + "Lattice", and Use 'Map Tool' Mapping Mode --> Pointwise as Shown in Image Above in Middle
    ( Now this New Profile works with Any other Min/Max Controlled Curve )
    ( Use previous explained method, Select Both 'Construction Curves' + 'Wanted Path' Then Use 'Reconnect Tool' ! )
    ( Above n Right, Made a Copy of wanted New Path, and made that renderable, Set its Illumination to Green in Property Window 'Color Tab' )
25. You can use a Copy of the "Template" Level´s "Lattice" Curve and Map a 'Tube Tools' Sub Spheres...to it !
26. In 'Top View' Drag n Drop the Copied "Lattice" Curve into the 'View Window' so we see it...
    ( Create an Analytic Sphere, with its Center at "Lattice"´s First point )
    ( With the Sphere Selected, Turn Macro Recording ON, 'Ctrl + m' or in Menu )
    ( Then Duplicate Sphere, 'Ctrl + d', Next Move this copied Sphere 1 grid to Lattice´s 2nd point, use 'm Key' ( Move Tool ) )
    ( End Macro Recording, 'Ctrl + m' and Execute it 8 times, 'Ctrl + g', if you want, use it from Menu instead... or from 'Named Macro Tab' )
27. Create a new 'Level', rightmousebutton (RMB) in the 'Select Window' in the choose New/Level
    ( Rename it to "Tube Tool" )
28. Create a new 'Tube Tool' Level, RMB as above, Choose New/Tube !
29. Drag n Drop newly created Tube Level into "Tube Tool" Level !
30. Now Select ALL 10 Spheres, and Drag n Drop them into "tube1"
    ( it Shall now look something like Below... )
31. Select the 10 Spheres again + "Lattice" ( in this order ), Then use 'Map Tool', 'Mapping Mode' --> Object
    ( Now you can Reconnect these spheres to any wanted new Curve, and use its Min/Max settings and animate it in whatever way )
    ( The Tube will follow smoothly and look cool, you can expand on this with alot, animating whatever these spheres are Reconnected to )
32. You can use a Copy of the Templates Mesh, and Turn that into Curves and Map those Curves to Copy of its "Lattice" curve
    ( If you like you can then mix an animation of Rendered Curves appear, and go into a Mesh.... )
33. Make a copy of the "Template" Level, reset its RT and WF, so you can see it, and Set RT/WF for to hide some other not needed objects
34. Select "Template" Level and make it Current ( Tab key ), Open it up, Select the Mesh, and use the 'Nurbs Tab's 'Curve Tool'
35. Now as you see below, a 'Curve Manager' and its Curves are created, with Mesh as base
    The Mesh is Controlled by its 'Construction' Curves, and those are Mapped to "Lattice"
    So now All is Controlled by the "Lattice" Curve !!!
    You can now Use Previous Mentioned, Reconnect 'Construction Curves' "nurbs38" "nurbs40" to a Wanted Curve !
    And the 'Curve Manager' Curves will follow nicely.., you can even Edit the 'Curve Manager' to set it to how many Curves and Points/Curve !
    Just now Animate it with "Lattice"´s Min/Max Slider ( or another Curve that you have Reconnected to.. of your own choice.. ! )
36. The Created Curves are set to render as default !
    Since things, when edited or animated, the 'Curve Manager' "Makes" New Curves.., Then you should Not set there colors in their own 'Color Tab'
    Instead, Drop a Material inside the "Template" Level, or Set the Color/Illumination in "Template"´s 'Color Tab' !