Hello, First, thank you for the link ! So here's the code I got for my example (the scene contains 2 objects, a 'Cube' and a 'Sphere'): import bpy from bpy.props import * properties = { 'Cube': [('a', 'a', 'a'), ('b', 'b', 'b'), ('c', 'c', 'c')], 'Sphere' : [('d', 'd', 'd'), ('e', 'e', 'e'), ('f', '...