OTL : Load resource rules through API

Hi

I am using the below API to load resource rules. Every time I use this API , I see eligibility rule created in the preference window. but still the employee not attached with the preference .

The preference get assigned only if I explicitly save the record from the form .

Anybody have any idea on the same

DECLARE

  ln_resource_rule_id NUMBER;

  ln_object_version_number NUMBER;

  BEGIN

     hxc_resource_rules_api.create_resource_rules

        (p_validate                      =>FALSE

        ,p_resource_rule_id              =>ln_resource_rule_id         

        ,p_object_version_number         =>ln_object_version_number      

        ,p_name                          => 'AU RULE RETRO 217189'