Hi Cintia, I could not find the task you mapped in the HOT tasking manager, so I'm commenting here. I notice that you mapped the buildings too large. Please try to mark the outline of the building's footprint, but not the area surrounding a building. Also, just tag it as `building=yes` and do not tag it as `name=Building` - the "name" tag should be used only when a building is known by that name, like "Burj Khalifa".