flash actionscript: Greetings.

Is there a way to set SOAPAction http header on an SOAPCall or PendingCall object?
I've been struggling with this for a couple of days - no luck.
Please help.

this worked fine for a XML-File send via XML.sendAndLoad()

Would you mind sending a code snippet? I think it would be a good idea to
start a discussion on the Best Practices with Falsh and Web Services. I've
googled and asked questions at the latest MAX conference a lot on this topic,
but couldn't get anything really helpful. For example, nobody really knew
what's the 'right' way to execute sequential web service calls from Action
Script. (using onResult event handler leads to ugly code when you need to
execute 20 Web Service calls in a series) Thanks. Oleg