Python component, no error, no output!

[mst.torabi]

Hello all,
I have a python component defined to read “construction type” from honeybee and calculate a variable accordingly.
my code shows no error yet no output.
there should be something I am missing

the component is attached.
py-question.gh (5.9 KB)

Thanks

[anon39580149]

z input is not list , you can use it as is

[mst.torabi]

@anon39580149 thank you