I'm sorry, i don't understand what you are asking. can you please provide a more detailed explanation of what you are trying to do, what is not working and how you expect it to work.
in one sentence you say:
"i want to login through SA access Level"
please describe more what you mean by this.
in another sentence you say:
"but it works well on user login"
pleases describe in more detail the difference between the two scenarios.
it would also help to have copies of the login page(s) so i can see the code.