Well, I didn't understand what "result" you were looking for..
$comcall is asynchronous, which is why you need an alias to know when it's done.
It means that indeed you cannot get the information from the original alias since nothing has been done (well you get the value of what $xml.document() returned in $result)
Of course, you can't have the asynchronous $comcall and still have the synchronous advantages, but you can't be willing to have both either, it doesn't make sense: you want to do something once you have the information, so just do what you want to do from that point with this result inside your callback alias.
