edit XML in a Webform

Hi,

I try to build a mask that enables the users to enter XML in a TextBox. When the form iries to transfer Data back to the server I get a Javascripterror with Servercode 500. Whe I try to transfer non-XML-Data everything looks OK (just my logic chrashes). I know that there is a XML control but this displays only XML and dosn't allow input.

Any ideas how to get this work? 

Thank you
Mirarwyn 

 
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