Hey, here the result for me trying this solution.
After adding this content to my .cfg file as described:
machine_disallowed_areas = [
[[-100,100],[100,100],[100,70],[-100,70]],
[[-100,100],[-95,100],[-95,-100],[-100,-100]],
[[-100,-90],[100,-90],[100,-100],[-100,-100]],
[[100,-100],[95,-100],[95,100],[100,100]]
]
I got the following result
Hope this will help ;)