For Successful step c, there is a prerequisite of
a) Defined a site Member (login to Member only page)
b) Defined a Role
Once done, you need to copy the roleID and mention it in step c code.
( var clientRoleval = “92e87bb1-21e9-4d2d-a716-4ebc9354a73c” 
Step c is calling Backend Script: memberRole.jsw
hope this helps
regards
sneha shah