How to access the attributes for the dynamic component?

[Vite]

Here’s a working example:

model = Sketchup.active_model
entities = model.entities
@dictionary_name = "dynamic_attributes"

for entity in entities
      attribute = entity.definition.get_attribute(@dictionary_name, 'lenx').to_f
      UI.messagebox(attribute.to_cm)
end

Source: Attribute Reporting