function update_unset_billing_values() { ajx_current("empty"); if (!logged_user()->isAdministrator()) { flash_error(lang("no access permissions")); return; } try { DB::beginWork(); $count = Timeslots::updateBillingValues(); DB::commit(); flash_success(lang("success update billing values", $count)); } catch (Exception $e) { DB::rollback(); flash_error($e->getMessage()); } }