SOAP request

[T-Network]

Hi,

I always get an internal 500 error when I try to send a soap msg to a JAXM servlet.
Content-type says text/html, I set it to text/xml in the Http Header Manager. 

-> ThreadGroup
    -> Simple Controller
        -> HTTP Header Manager
        -> SOAP Request
        -> timer
        -> listener

SOAP msg:

<soap-env:Envelope 
xmlns:soap-env="http://schemas.xmlsoap.org/soap/envelope/";><soap-env:Header/><soap-env:Body><get></get></soap-env:Body></soap-env:Envelope>

I add to the Header Manager
Content-Type text/xml

Any Idea??