It is very frustrating
(
I have a sample code that works, I can see a triangle and a box.
If I substitude the code for that two objects with the code for a part, I see - nothing.
At present I have no clue what I am doing wrong.

I have a sample code that works, I can see a triangle and a box.
If I substitude the code for that two objects with the code for a part, I see - nothing.
At present I have no clue what I am doing wrong.
