Probleme with string encoding in SOAP

Question

Hello,

I have an application in Flex3 and when I send an Soap Query, I have a corect enveloppe,

but when I try the same code in Flex 4, the sting is encoding :

exemple :

Flex 3 :

  <ns1:orderLine>
      <ns1:line_nr>2</ns1:line_nr>
      <ns1:productCode>7443</ns1:productCode>
      <ns1:quantity>20</ns1:quantity>
     </ns1:orderLine>

Flex 4 :

 <ns1:orderLine>
      <ns1:line_nr>1</ns1:line_nr>
      <ns1:productCode>&lt;productCode xmlns=&quot;http://emt.netsoa.netinfluence.com/types/order&amp;quot;&amp;gt;7505&amp;lt;/productCode&amp;gt;&lt;/ns1:productCode&gt;
      <ns1:quantity>20</ns1:quantity>
     </ns1:orderLine>

The integer is correct, but the string fail.

How can i correct this ?

Jean