Thank for Your answer.
The *.skp file is downloaded from this post. Any way I using Sketchup in my work (design office), I have many components and nested components in my project. Will be nice to use plugin ( like Your plugin) to unfiy components to simplify my project . Do You know some alternatif plugin? With kind regards MP.

Why plugin does not work. The example in the link:

Thank you for the clarification.
Regards.