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In 2024.3.1 python cannot set the layer parameter of a Capsule object. Other object types seem to be unaffected. Console shows the error: “AttributeError: parameter set failed”

Reproduction:

• Open Cinema 4D
• Add new layer in the Layer Manager
• Add a capsule object to the scene (e.g. Polygon Bevel)
• Run the script below in the Script Manager to set layer parameter for all objects

import c4d

def main() -> None:
    
    # Get first layer
    myLayer = doc.GetLayerObjectRoot().GetDown()
    
    # Get objects in scene
    allObjects = doc.GetObjects()
    
    # Set layer attribute for objects in scene
    for i in range(len(allObjects)):
        allObjects[i][c4d.ID_LAYER_LINK] = myLayer
        c4d.EventAdd()
    
if __name__ == '__main__':
    main()

Result

• The capsule layer is NOT set
• Error appears in console in the python tab

Versions

• [NOK] 2024.3.1
• [OK] 2024.2.0

Tested on:

• Windows 11 Pro (23H2)
• OSX Monterey 12.6.3