New to openEMS, how to slove Warning:Unused primitive (type: Box) detected in property:

[Brianye99]

In my project, there are many zero-thickness metal structures. I used the addBox method to add them as metal materials, but it turns out these structures are not being recognized or utilized. I can't figure out where the problem lies. The relevant code is as follows:
copper = CSX.AddMetal('copper ')
copper.AddBox([3, 0, 0], [7, 2, 0], priority=10)
...

[gadiLhv]

Probably because there is no

SetPrimitiveUsed(true);

in the method here:
https://github.com/thliebig/openEMS/blob/342e7ce17af9d80575a3ad19caaa06bf6ad766eb/FDTD/operator.cpp#L2005-L2039

@thliebig, can you confirm?

[Brianye99]

I wrote this in Python. Could you be more specific about what I should add to my code? After calling addBox, I use AddEdges2Grid, but the result is incorrect and the log shows far fewer lines than I actually added.

[gadiLhv]

I meant this could be a bug in the C++ source code, and raised the issue with the developer.

[Brianye99]

Thank you very much. In the same setup, Octave runs without any issues. I suspect that AddEdges2Grid might not recognize a zero-thickness metal box, whereas Octave’s interface provides a detectEdges method that correctly interprets the structure. Do you have any other advice?

[gadiLhv]

Can you provide both setups? The python and octave scripts?