function setObjectTypeIds($ids)
 {
     if (is_array($ids)) {
         if (!$this->isNew()) {
             //If needed, delete mappings first.
             $lf_a = new HierarchyObjectTypeListFactory();
             $lf_a->getByHierarchyControlId($this->getId());
             $tmp_ids = array();
             foreach ($lf_a as $obj) {
                 $id = $obj->getId();
                 Debug::text('Hierarchy Object Type ID: ' . $obj->getId() . ' ID: ' . $id, __FILE__, __LINE__, __METHOD__, 10);
                 //Delete users that are not selected.
                 if (!in_array($id, $ids)) {
                     Debug::text('Deleting: ' . $id, __FILE__, __LINE__, __METHOD__, 10);
                     $obj->Delete();
                 } else {
                     //Save ID's that need to be updated.
                     Debug::text('NOT Deleting : ' . $id, __FILE__, __LINE__, __METHOD__, 10);
                     $tmp_ids[] = $id;
                 }
             }
             unset($id, $obj);
         }
         foreach ($ids as $id) {
             if (isset($ids) and !in_array($id, $tmp_ids)) {
                 $f = new HierarchyObjectTypeFactory();
                 $f->setHierarchyControl($this->getId());
                 $f->setObjectType($id);
                 if ($this->Validator->isTrue('object_type', $f->Validator->isValid(), TTi18n::gettext('Object type is already assigned to another hierarchy'))) {
                     $f->save();
                 }
             }
         }
         return TRUE;
     }
     return FALSE;
 }