Absolute distance along spline for Shape Extrusion Module

[amutp]

I need to place different materials on a race track, but since I cannot do it via the v coordinate of UV, I am creating separate Volumes from the same spline.

To do this, I use the Shape Extrusion module and set the "From" values to the relative values that I need in the spline.

Is there a way to do it with absolute position rather than relative?

Thanks!