Redirect for specific page for certain user

Question

All if i had a user that i just wanted to see one certain page, how can i set it up that one he /she logs in they get sent to that page. I did try the brances but when i put in
Branch to page 37
Condition "Value of Expression 1 = Expression 2"
val1 :APP_USER
val2 : SALES
The page just redirects to the default page. The seq for the branch is set to be above
the normal login seq

Answer 1

I tried to solve the problem on another way. I authenticate users with data in the USERS table and my own authentication function. I have in this table a field with page number for redirection. I put this number in a :P101_PAGE item (and user_id in application item :APP_USER_ID) before calling login function. The login call is:
www_flow_custom_auth_std.login(
P_UNAME => upper(:P101_USERNAME),
P_PASSWORD => :P101_PASSWORD,
P_SESSION_ID => v('APP_SESSION'),
P_FLOW_PAGE => :APP_ID||':'||v('P101_PAGE'));
It works properly every second time.
After proper redirection the session state is:
P101_PAGE null
FSP_AFTER_LOGIN_URL null
APP_USER_ID null
Otherwise (wrong redirection to page 1)
P101_PAGE 10 (ok)
FSP_AFTER_LOGIN_URL f?p=100|1 (fault)
APP_USER_ID 1 (ok)
Why is it so?