Problem Value Mapping from JAVA

Hi experts,

   I doing a custom adapter module and one of the things that I have to do is recover a value from a value mapping.

   For that I'm using the API com.sap.aii.mapping.value.api.XIVMService

   I try many options always with the same result, but basically the simplest call is something like that:

   String newString = XIVMService.executeMapping( "testavf", "cXML_Identity", "uno", "testtito", "cXML_SharedSecret");

  Im throwing the this string as an ModuleException to debug the problem, and always the value of this string is:

  Mapped value of Source: http://sap.com/xi/XI cXML_Identity testavf uno Target: http://sap.com/xi/XI testtito cXML_SharedSecret

  But nothing else more..

   I try with the standard context http://sap.com/xi/XI and also creating a VM with different context and also creating XIVMFactory.newIdentifier for the source and the target, always the result of the execution are the values I set for the call

  I try also recovering all the String array and checking all the values there is only this one...

  The information of my system is: NW731EXT_11_REL JAVA only Stack.

Thanks for your help

Regards