I want to reorient these surfaces to the xy plane without them rotating

[amir_kharrat]

GRILLE (1).gh (15.7 KB)

i basically want them like the 2nd picture

[magicteddy]

Hello,

Not sure this is what you want, but you can orient those surfaces in a grid like this. They won’t be attached though.
Another way could be to unroll the entire polysurface, but each face is not strictly planar so this would cause a bit of deformation.

GRILLE_re.gh (21.8 KB)

[amir_kharrat]

THATS EXACTLY WHAT I NEED ? TY ?,CAN I APPLY IT FOR THE FIRST BREP, ? the big one?