Passing Parameters

Right now I have three pages that I am passing parameters into.

I am using the code below in my child theme ‘functions.php’ in order to set everything up correctly.

function add_query_vars($aVars) {
  $aVars[] = "profile_status";
  $aVars[] = "raceid";
  $aVars[] = "category";
return $aVars;
}

add_filter('query_vars', 'add_query_vars');

function add_rewrite_rules($aRules) {

  $aNewRules = array(
                     'racer-profile/([^/]+)/?$'             => 'index.php?pagename=racer-profile&profile_status=$matches[1]'
                    ,'race-registration-page2/([^/]+)/?$'   => 'index.php?pagename=race-registration-page2&raceid=$matches[1]'
                    ,'race-registration-page3/([^/]+)/?$'   => 'index.php?pagename=race-registration-page3&raceid=$matches[1]&category=$matches[2]'
                    );

  $aRules = $aNewRules + $aRules;

return $aRules;
}

add_filter('rewrite_rules_array', 'add_rewrite_rules');

Using that code I am able to call one of the pages like this, where ‘8’ is the ‘raceid’ parameter value:

https://mydomain.com/race-registration-page2/8/

That works just fine.

But as you can see in my code, for one of my pages (race-registration-page3) I am trying to pass two parameters (‘raceid’ and ‘category’).

When I call that page with just one parameter (‘raceid’) it works perfectly. But as soon as I call it with two parameters (see below), it doesn’t work.

https://mydomain.com/race-registration-page3/8/Solo/

What am I doing wrong?

Thanks!