Hello, hope I can get some assistance please.

I followed the tutorial here https://buddydev.com/show-only-users-of-opposite-genders-on-buddypress-site/ , and did some modification so that it works with the xprofile field, precisely gender in buddyboss and I have only male and female.

// Modifies members loop args to filter out users of same gender.
	public function filter_args( $args ) {
		// do not filter if user is not logged in, or is super admin or we are inside dashboard.
		if ( ! is_user_logged_in() || is_super_admin() || ( is_admin() && ! defined( 'DOING_AJAX' ) ) ) {
			return $args;
		}

		$opposite_gender = $this->get_opposite_gender( bp_loggedin_user_id() );
		$jlw_gender_field = xprofile_get_field( bp_get_xprofile_gender_type_field_id() );
		if ( $opposite_gender ) {
			$args[$xprofile_query] = $opposite_gender;
		}
		return $args;

	}

	// Restricts access to user profile.
	// Only allows profile owner, user of opposite gender or site admins to view.
	public function check_access() {
		if ( ! is_user_logged_in() || ! bp_is_user() || bp_is_my_profile() || is_super_admin() ) {
			return;
		}

		$user_gender = $this->get_user_gender( bp_loggedin_user_id() );
		$displayed_user_gender = $this->get_user_gender( bp_displayed_user_id() );

		// do not allow access for same gender.
		if ( $displayed_user_gender === $user_gender ) {
			bp_core_add_message( __( 'Access denied.', 'yym-helper' ) );
			bp_core_redirect( bp_loggedin_user_domain() );
		}
	}

	// Get user gender
	private function get_user_gender( $user_id ) {
		return xprofile_get_field_data( bp_get_xprofile_gender_type_field_id(), $user_id );
	}

	// Finds the opposite gender
	private function get_opposite_gender( $user_id ) {

		$user_gender = $this->get_user_gender( $user_id );

		if ( empty( $user_gender ) ) {
			return null;
		}

		if ( $user_gender === 'his_Male' ) {
			return 'her_Female';
		} elseif ( $user_gender === 'her_Female' ) {
			return 'his_Male';
		}

		return null;
	}

Now the code only works if a member profile is visited, and will redirect back if it is the same gender, but on the member directory it doesn’t work. All the members are still showing.

I tried to dig a bit into it, but it turns out that I am not a developer to figure it out.

I feel the problem is here
$args['member_type'] = $opposite_gender;
replaced by
$args[$xprofile_query] = $opposite_gender;
still it doesn’t work; and then I discover this https://www.buddyboss.com/resources/reference/functions/bp_xprofile_add_xprofile_query_to_user_query/ , but don’t know how to use it.

Some help please.
Thanks in advance