Security :: Virtual Private Database Update Policy On Complex Views

1)I have created a complex view, and created an instead of trigger on this view

example:

create or replace trigger tr_x instead of before update on test_view_name for each row
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2) I have created an update policy on this view

DBMS_RLS.ADD_POLICY (
object_schema := schema_name,
object_name := name of the view,
policy_name := ploicy name,
function_schema := func schema name,
policy_function := pkg_test.fn_get_where,
statement_types := 'UPDATE',
update_check := TRUE,
policy_type := dbms_rls.dynamic);

3) function pkg_test.fn_get_where, which is used in the policy function always return 1 = 2, so that update should fail.

4) Now I will issue an update statement on the view test_view_name

update test_view_name set test_col = 1;

but still it updates the records, though update policy returns the where cluse 1 = 2

same where clause for select policy works perfectly fine.