function autoincrement(){
            
            if(!isset($this->data['_NonDB_System_']['_AutoIncrement_'])){
                $this->data['_NonDB_System_']['_AutoIncrement_'] = 1;
            }

            $number = ($this->data['_NonDB_System_']['_AutoIncrement_'] ++);
            $this->save();

            return $number;

        }