Hello Nemo,

Thank You for the smartpart link.

I've tried to copy the code to your last smartpart fits my requirements for the window sill perfectly,
because with this last one I can't manage to get what I want, i just need the hatch.. etc possibility.

I didn't manage to get the same effect,
the smartpart is in the attachment.

Thank You again for being so helpful!!

Here is the reason why I need hatch in the previous smartpart,
because in cross section I can't see the hatch, color in this section.

I managed to create window sills (red and green) that are required dimensions from the smartpart that you gave previously (and thank you so so much for it!!), but I can't manage to get hatch on it automatically via code. I keep failing somewhere.

...

I've read and studied the Step by step smartpart documentation, did a lot of research to add hatch to this windowsill, spent hours and hours and Allplan already had the function.. to solve my problems.

Thank You!