custom rewrite

good day everyone!!

i got this code here on the forum and it’s working fine.

add_filter('rewrite_rules_array','my_insert_rewrite_rules');
			add_filter('query_vars','my_insert_query_vars');
			add_action('wp_loaded','my_flush_rules');

			// flush_rules() if our rules are not yet included
			function my_flush_rules(){
				$rules = get_option('rewrite_rules');

				if(!isset($rules['(whats-new)/page-(\d*)$']) || !isset($rules['(whats-new)/page-(\d*)/(\d*)$'])){
					global $wp_rewrite;
					$wp_rewrite->flush_rules();
				}
			}

			// Adding a new rule
			function my_insert_rewrite_rules($rules)
			{
				$newrules = array();
				$newrules['(whats-new)/page-(\d*)/?$'] = 'index.php?pagename=$matches[1]&param1=$matches[2]';
				return $newrules + $rules;
			}

			// Adding the id var so that WP recognizes it
			function my_insert_query_vars($vars)
			{
				array_push($vars, 'param1');
				return $vars;
			}

my problem is, i want to have multiple parameters and i don’t know how.

i already tried this one but it’s not working fine.

add_filter('rewrite_rules_array','my_insert_rewrite_rules');
			add_filter('query_vars','my_insert_query_vars');
			add_action('wp_loaded','my_flush_rules');

			// flush_rules() if our rules are not yet included
			function my_flush_rules(){
				$rules = get_option('rewrite_rules');

				if(!isset($rules['(whats-new)/page-(\d*)$']) || !isset($rules['(whats-new)/page-(\d*)/(\d*)$'])){
					global $wp_rewrite;
					$wp_rewrite->flush_rules();
				}
			}

			// Adding a new rule
			function my_insert_rewrite_rules($rules)
			{
				$newrules = array();
				$newrules['(whats-new)/page-(\d*)/?$'] = 'index.php?pagename=$matches[1]&param1=$matches[2]';
				$newrules['(whats-new)/page-(\d*)/(\d*)/?$'] = 'index.php?pagename=$matches[1]&param1=$matches[2]&param2=$matches[3]';
				return $newrules + $rules;
			}

			// Adding the id var so that WP recognizes it
			function my_insert_query_vars($vars)
			{
				//$vars[] = 'param1';
				//$vars[] = 'param2';
				array_push($vars, 'param1');
				array_push($vars, 'param2');
				return $vars;
			}

thank you in advance!!
more powers,.