I need to break polylines and stretch vertically with joined 3D polyline, or something similar, to custom elevation +-Z axys, with the intersection of polyline closed, block, 3D element, or xref...
... I mean break polylines in the intersections, create duplicate vertex in the breaked vertex, then stretch to any choice elevation, and if possible keep polylines joined.
here some images, white= polyline I want to break and stretch, square objects = elementos to intersect polylines, red = polylines in elevations +-5000 units, yellow = vertical polyline.