I have been trying, for a long time now, to turn topo subregion to roof slab. In the old version of Dynamo there was a package that did that as far as I remember. I am familiar with the DWG export method that does not involve Dynamo, but that does not work well since it creates multi-slab surface and therefore I cannot apply fascia properly to create a continuous pavement curb for instance. Any other solutions for the task will be greeted with joy.