Even though this set up is quite thought out I can see one problem...the light sitting on top of the stand...there's nothing to stop a chameleon from getting up there and touching it...
http://reptileapartment.com/guide-free-ranging-chameleons/
https://www.chameleonbreeder.com/podcast/ep-24-free-ranging-chameleons-with-karen/
Another view...
http://www.muchadoaboutchameleons.com/2013/05/free-ranging-risks-and-benefits.html
One more...
https://www.instructables.com/id/A-Free-Range-Habitat-for-Mellers-and-other-Large-/
http://reptileapartment.com/guide-free-ranging-chameleons/
https://www.chameleonbreeder.com/podcast/ep-24-free-ranging-chameleons-with-karen/
Another view...
http://www.muchadoaboutchameleons.com/2013/05/free-ranging-risks-and-benefits.html
One more...
https://www.instructables.com/id/A-Free-Range-Habitat-for-Mellers-and-other-Large-/
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