How send Sender file to xi Receiver adapter in 1 STRING

Hello,

I have a question...

how I can send a archive XML through pi but I need send all xml in a STRING, whitout generate structure on data type, a STRING only.

example:

xml:

<?xml version="1.0" encoding="utf-8"?>

  <nr1:SENDER_MT xmlns:nr1="urn:integra:sap:legacy:comercionet:ZSDIN85">

    <Name>Juan</Name>

      <Last_Name>Perez</Last_Name>

</nr1:SENDER_MT>

RECEIVER PROXY XI:

<String>

     <?xml version="1.0" encoding="utf-8"?>

            <nr1:SENDER_MT xmlns:nr1="urn:integra:sap:legacy:comercionet:ZSDIN85">

                   <Name>Juan</Name>

                   <Last_Name>Perez</Last_Name>

           </nr1:SENDER_MT>

</String>

the XML in a String when get  PROXY.

I dont know how create the DATA TYPE and configure content conversion if is necesary.

help!