Out SOAP header problem in asynchronous call (ASMX)

[napssav]

Hello,

I am trying to implement an out SOAP header in a web service function
(that is, a SoapHeader with Direction=SoapHeaderDirection).

It works fine when I call it synchronously, but asynchronous way just
does not work. When direction is Inout, web service gets it, but
changes does not appear on client side. "In" header works fine.

My question is: how to do it?

Is it possible using the standard ASP.NET Web Services / WebMethods
architecture, or I need Web Services Enhancements or something like
that? I am using Microsoft Development Environment 2003 and Microsoft
..NET Framework 1.1.

Any help is appreciated!

napsav