Creating roof using the node Roof.ByOutlineTypeAndLevel

Hey everyone!! I am trying to creating a roof using the node Roof.ByOutlineTypeAndLevel and unfortunately I can not manage it . Can you help me to understand the mistake/error?

the python script which I am using is: (I used it to create floor and wall and it worked fine)

import clr
from Autodesk.DesignScript.Geometry import *

Import DocumentManager and TransactionManager

import RevitServices
from RevitServices.Persistence import DocumentManager
from RevitServices.Transactions import TransactionManager

Import RevitAPI

import Autodesk
from Autodesk.Revit.DB import *

doc = DocumentManager.Instance.CurrentDBDocument
uiapp = DocumentManager.Instance.CurrentUIApplication
app = uiapp.Application

from System.Collections.Generic import *

Import ToDSType(bool) extension method

import Revit

#The inputs to this node will be stored as a list in the IN variable.
dataEnteringNode = IN

inputCurves = IN[0]

#join/group curves function
def groupCurves(Line_List):
ignore_distance = 0.1 # Assume points this close or closer to each other are touching
Grouped_Lines =
Queue = set()
while Line_List:
Shape =
Queue.add(Line_List.pop()) # Move a line from the Line_List to our queue
while Queue:
Current_Line = Queue.pop()
for Potential_Match in Line_List:
Points = (Potential_Match.StartPoint, Potential_Match.EndPoint)
for P1 in Points:
for P2 in (Current_Line.StartPoint, Current_Line.EndPoint):
distance = P1.DistanceTo(P2)
if distance <= ignore_distance:
Line_List = [item for item in Line_List if item not in Queue]
return Grouped_Lines

OUT = groupCurves(inputCurves)

No python required. The node expects a list of curves, not a single polycurve.

Remember, there are no polycurves in Revit so you can’t use them to make sketches.

I tried using the curves but stil can not manage

Skip the python node and try this way:

There are two nodes, one with PolyCurve and one with Curves, but if you use model lines they both work.

@lucamanzoni i tried your way and still can not manage; i am starting to think there is a problem with the node itself Roof.Byoutlinetypeandlevel

Sorry I used the Floor node, but it works also with Roof node:

Which kind of curves are you using? Can you show the previews?

Where is node Roof Types from? Try to use a OOTB package like RoofType.ByName

the roof types node is from Rythm package

@lucamanzoni it worked with the node RoofType.ByName, the problem was with the Rythm node

Thank you very much