Ladybug Solar envelop Study - Maxheight less than 0

Hi Mostapha / the ladybug team,
I’m trying out the ladybug solar envelop study component, for some reason the maxheight input is asking for a number equal or less than 0, which doesn’t really make sense to me.
Definition attached here.
It would be great if you can explain it further to me.

Ladybug (408.9 KB)

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