cx:polyglot examples

I am trying to call JavaScript using cx:javascript (XmlCalabash), but am encountering this error.

`Step failed: javascript evaluation failed or signaled an error.`

My naive example:

  <cx:javascript>
        <p:with-input port="program">
            <p:inline content-type="text/javascript">
                console.log("Starting markdown to OSCAL conversion");
            </p:inline>
        </p:with-input>
    </cx:javascript>

I’m sure I’m doing something wrong, but I couldn’t find any usage examples.

Thanks,

John Dziurłaj /d͡ʑurwaj/