Multiple params not working properly in webservices tag

I configured webservices to use a rewrite of the soap endpoint. The following attributes don't seem to work correctly

1. Adding this entry does not work. I need the value for protocol to be configurable

<wsdl-uri-scheme>${wsdl.protocol:http}</wsdl-uri-scheme>

With error

Message: "WFLYCTL0248: Invalid value ${wsdl.protocol:http} for wsdl-uri-scheme; legal values are [http, https]"

2. wsdl-port is not leveraged properly. I manually changed to https, based on the above limitation. I set this:

<wsdl-uri-scheme>https</wsdl-uri-scheme>
<wsdl-port>${wsdl.port:443}</wsdl-port>

However, the reported URL includes 8443 not my configured 443 value.

In addition, if I manually set the values

            <wsdl-uri-scheme>https</wsdl-uri-scheme>
            <wsdl-port>443</wsdl-port>

I still get 8443.