How to have regular slope in my spline

 From:  Frenchy Pilou (PILOU) 3 May 2017  (2 of 6) 
8405.2 
The slope maybe the native Helix + Blend functions ?

then Plugin Pipe2
http://moi3d.com/forum/index.php?webtag=MOI&msg=1463.48

EDITED: 3 May 2017 by PILOU