transfer scene files from 3DSlicer to Unity3D

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I have this error

>>> #####3d
>>> seg=slicer.mrmlScene.AddNewNodeByClass('vtkMRMLSegmentationNode')
>>>slicer.modules.segmentations.logic().ImportLabelmapToSegmentationNode(getNode(nodo), seg)
Traceback (most recent call last):
File "<console>", line 1, in <module>
TypeError: arguments do not match any overloaded methods
>>> seg.CreateClosedSurfaceRepresentation()
True