Script not working

Script not working

Hi 

I try to automatically set requester name for technician to avoid issue with missing names, I get this script here

https://pitstop.manageengine.com/portal/en/kb/articles/how-to-set-the-requester-field-as-logged-in-user

But when i set it, i have a error message on formload "$CS is not defined at eval"