General problem communicating with SOAP-API

Hello,

does anybody know whats wrong with this basic code?

Whatever I post to this API, I always get back the API itself.. Strange. Maybe someone could try this code?

<cfhttp method="POST" url="https://sandbox-soap.billsafe.de/wsdl/V211"   result="httpResponse"  >

    <cfhttpparam type="header" name="content-type" value="text/xml" />

    <cfhttpparam type="header" name="charset" value="utf-8" />

    <cfhttpparam type="header" name="accept-encoding" value="no-compression" />

    <cfhttpparam type="xml" value="anything" />

</cfhttp>

Normally I put SOAP-content in the last cfhttpparam-tag but the API doesnt care about what I'm posting so I think the problem is anywhere else.

I tried to deal with the api using SOAP-UI, that wor´ks.

Any Ideas?

Thank you

Problem is more detailed described here: SOAP-API is not talking to me