Thank you! With node Springs.Collector. Element Sketch is a little familiar, tried to illustrate. The roof is given, in the dynamo I select all the roof elements through the category, we get the FootPrintRoof using Springs.Collector. Element Sketch (as an option) we get such roof lines similar to the sketch, but they do not have the parameters, as in the sketch lines of the roof, if you choose them, in the mode of editing the roof. I would like to know if it’s really possible to get access to the parameters of the sketch lines of the roof itself from the roof element (FootPrintRoof), or is it just a dream? …