Ladybug turns squares into triangles unwantedly

Hi everybody!
I have a problem that I couldn’t manage to solve.
I made a model on grashopper using kangaroo, and I’m using the holes created as surfaces for different panels. so I connect a list of squared meshes to LB direct sun hours and the output that i get is making each square into 2 triangles, and I wish to leave it as the originals squares.
Why is this happening, and how can I do it?
Thank you!