Problem calling a packaged function from an authorization scheme

Question

I wrote a package and body called pkg_auth with a function returning a boolean called is_authorized with 2 parameters (username and functional area).
i.e.
CREATE OR REPLACE PACKAGE pkg_auth
AS
FUNCTION is_authorized(p_username VARCHAR2, p_functional_area VARCHAR2) RETURN BOOLEAN;
END;
additionally i created a public synonym for it and granted execute access on it to apex_public_user and htmldb_public_user;
i then created an authorization scheme called 'access_control_db' defined as Scheme Type 'PLSQL Function Returning Boolean' and placed the following:
pkg_auth.is_authorized(v('APP_USER'),'DATABASE')
in the Expression 1 field.
and the following:
Not permitted to edit database information.
in the error field.
However when I apply this authorization scheme to a buton I receive the following error when I go to the page containing that button:
ORA-06550: line 1, column 44: PLS-00221: 'IS_AUTHORIZED' is not a procedure or is undefined ORA-06550: line 1, column 44: PL/SQL: Statement ignored
     Error      ERR-1082 Error in executing authorization scheme code.
Any help would be most appreciated.

Answer 1

Hello,
Does putting 'return' infront -
return pkg_auth.is_authorized(v('APP_USER'),'DATABASE')fix your problem?
John.
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