private function createCommission($commissionGroupId, $commissionTypeId, $tier, $type, $value) {
$c = new Pap_Db_Commission();
$c->set("tier", $tier);
$c->set("subtype", 'N');
$c->set("commissiontype", $type);
$c->set("commissionvalue", $value);
$c->set("commtypeid", $commissionTypeId);
$c->set("commissiongroupid", $commissionGroupId);
$c->insert();
return $c->get("commissionid");
}