offsetting a series of vectored interp curves in z direction?

HI, I want to incrementally change an interp curve and loft each one in a z direction, I think it maybe to do with the list management but I havent been able to figure it out at all.

I managed to do it in a very irritating way that selects each set of different points seperately but I want to do it all in one go does anyone please know how to do this??

I have a list of vector magnitudes for three points off set outwards (from a divided curve) there is an interp curve determining a set of closed line between these “vectored” three points that that do move and three that dont.

I just wondered if it was possible to fit it all in a simpler format where you can displace each curve automatically in a z direction and loft it instead of selecting each vector magnitude and making a separate curve with a different z value.

It seems very laborious for a single series of vectors.

I have tried to do this soo many ways but havent figured it out.

the first image show what i want to get and the second is what went wrong