Thank you very much! Now it is working.

Hi!
How can I use the Plane Cut Tool with Python in Cinema4D. I tried the following code but it always fails and returns false as a result. Also: is it possible to specify coordinates by using a vertex (e.g. c4d.Vector(0,0,0) to specify the cut location?

obj = doc.GetActiveObject()
 
settings = c4d.BaseContainer()  # Settings
settings[c4d.MDATA_KNIFEPLANE_MODE] = c4d.MDATA_KNIFEPLANE_MODE_REGION_A
settings[c4d.MDATA_KNIFEPLANE_PLANE_MODE] = c4d.MDATA_KNIFEPLANE_PLANE_MODE_LOCAL
settings[c4d.MDATA_KNIFEPLANE_PLANE] = c4d.MDATA_KNIFEPLANE_PLANE_XZ

result = c4d.utils.SendModelingCommand(
            command=c4d.ID_MODELING_KNIFE_PLANE,  # Use the ID of the modeling command for the cut tool
            list=[obj],
            mode=c4d.MODELINGCOMMANDMODE_POLYGONSELECTION, 
            bc=settings, 
            doc=doc,
        )