python SME error

[fubing666]

from pymxs import runtime as rt
rt.MatEditor.Open()

if rt.maxOps.mtlDlgMode == rt.Name('basic'):
rt.meditMaterials[0] = rt.selection[0].material
elif rt.maxOps.mtlDlgMode == rt.Name('advanced'):
if rt.sme.activeView == 0:
rt.sme.CreateView(rt.uniquename("MaterialView_"))
active_view = rt.sme.GetView(rt.sme.activeView)
new_node = active_view.CreateNode(rt.selection[0].material, rt.Point2(400, 800))

nodes_array = rt.Array(new_node)
active_view.LayoutAll()
#1:
active_view.SetSelectedNodes(new_node )

# Unable to convert: <MixinInterface:Node> to type: MaxObject
# 2:
#active_view.SetSelectedNodes(nodes_array)

# Unable to convert: <MixinInterface:Node> to type: MaxObject


active_view.ZoomExtents(type=rt.Name('selected'))

i use #1: or #2:    max send back：# Unable to convert: <MixinInterface:Node> to type: MaxObject

please help me!!3q

[istan]

https://help.autodesk.com/view/MAXDEV/2025/ENU/?guid=GUID-7E144C67-4F97-4A2A-924E-711870C7DF6E 

You read ?

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Hello @fubing666 ,

Let me know if this is what you were looking for: 

from pymxs import runtime as rt

def main():
    try:
        # Open Material Editor
        rt.MatEditor.Open()
        
        # Check if there are any selected objects
        if rt.selection.count == 0:
            raise Exception("No objects selected.")
        
        # Check the mode of the Material Editor
        if rt.maxOps.mtlDlgMode == rt.Name('basic'):
            rt.meditMaterials[0] = rt.selection[0].material
        elif rt.maxOps.mtlDlgMode == rt.Name('advanced'):
            if rt.sme.activeView == 0:
                rt.sme.CreateView(rt.uniquename("MaterialView_"))
            
            active_view = rt.sme.GetView(rt.sme.activeView)
            
            # Ensure there's a material to work with
            if not hasattr(rt.selection[0], 'material'):
                raise Exception("Selected object does not have a material.")
            
            new_node = active_view.CreateNode(rt.selection[0].material, rt.Point2(400, 800))
            
            # Convert new_node to a MaxObject
            max_node = rt.GetMaxObject(new_node)
            
            # Use the correct node type for SetSelectedNodes
            nodes_array = rt.Array(max_node)
            active_view.LayoutAll()
            
            # Set selected nodes properly
            active_view.SetSelectedNodes(nodes_array)
            
            # Zoom to extents of selected nodes
            active_view.ZoomExtents(type=rt.Name('selected'))
        
    except Exception as e:
        print(f"Error: {e}")

main()