I'm looking for a way to animate custom Blender attributes. Let's say we have an attribute created using the solution from this post: Manually setting custom attributes per edge / vertex / etc
import bpy
mesh = bpy.context.collection.objects["Cube"].data
attribute = mesh.attributes.new(name="new attribute", type="FLOAT", domain="POINT")
attribute_values = [i for i in range(len(mesh.vertices))]
attribute.data.foreach_set("value", attribute_values)
Now, when I'm trying to add animation using attribute.keyframe_insert(), I'm facing a problem. What should be entered into the data_path argument? I've tried entering "value" or the output of dir(attribute) without success.
