public function addNumberOfRows(string $report_name, int $num_rows) {
		$this->addSeparator($report_name);
		$this->addLegend($report_name, i18n(null, \Object\Content\Messages::REPORT_ROWS_NUMBER, ['replace' => ['[Number]' => \Format::id($num_rows)]]));
		// we need to trigger form update
		if (!empty($this->form)) {
			$this->form->misc_settings['report']['num_rows'] = $num_rows;
		}
	}