Hi @Nenov, first of all, welcome in the plugincafe community.
No worry since it's your first post, but I would like to point you to the Q&A Functionality and How to Post Questions especially about categories.
I've setup your topic correctly and moved to the correct category.

Regarding your issue, this actually the purpose of the example to do a different operation on even and odd clones.
With that's said you can find more example in our Github repository especially theses following files:

field_python_color_direction.c4d field_pythonmodifier_readcolor.c4d field_pythonmodifier_vertexmap.c4d

If you have any question please let me know,
Cheers,
Maxime.