One thing that I would advise, in case there is any doubt about how the parameters should be provided, is to execute the tool manually and copy the python code from the Results window. This shows how the parameters should be provided. In case you feel that the help does not reflect clearly how things the tool should be used, you can use the "Feedback on this topic" link in the lower right part of the Help topic. I have used it several times and Esri has responded very fast (mostly the same day).