If by "actorNamen" you mean actor.Name() then yes that phrase does occur in several of the example scripts. If you are typing actorNamen then yes you will get errors. The manual was written for Poser 7 but much will apply to Poser 5 also.

The gist of my offer was that you make your best attempt at writing the script, then let me see it so that I can guide you as you learn. My time like so many others is limited but I'll certainly be happy to set you on the right initial path.