if you load this one by James
http://moi3d.com/forum/index.php?webtag=MOI&msg=9358.1

it must be have the last version of the Node Editor (even I suppose it's written 1.0 (?) )
Wait the answer of James for confirmation
In any case with it the Helix function works fine exactly like that you found here
https://moiscript.weebly.com/curves2.html#helix

For the Macros takes a look here
https://moiscript.weebly.com/macro-e.html

Needs an entrance (In) and an exit (Out)!
(given by Right clicking on the empty screen of the Macro!!! )
And then Right Click on the News In & End for give the good nature (color) of Number, Point, Object