XF 2.1 Retrieve a value from the url with filterUrl

[grantus]

I'm building a page where I'm checking the params to see who is on the page, either a sender or receiver.

In my URL it would be like this:

sender: cpanel/challenge/{id here}/

receiver: cpanel/challenge/view/{alert id here}/

The issue is that since 'challenge' is in the URL for both, it's never grabbing the 'view' value from the params, so I've set up two functions like this:

public function getChallengeUserId(ParameterBag $params) {
        // Retrieve and filter the 'challenge' parameter from the URL
        $params_challenge_user_id = // filterURL here
        
        return $params_challenge_user_id;
    }
    
    public function getViewUserId(ParameterBag $params) {
        // Retrieve and filter the 'view' parameter from the URL
        $params_view_user_id =  // filterURL here
        
        return $params_view_user_id;
    }

What would be the best approach?