How to do message mapping dynamic ?

Hi Friends,

when i make messsage mapping in ESR side, i couldnt see response message in sproxy side. If i use constant value in message mapping, i can see response message in sproxy side. All screenshot i uploaded please help me about problem

1-) mapping.jpg my mapping like that

2-)sourcecode.jpg left side loginresponse.xml and right side is loginresponse

3-)response message.jpg is true response message in soapui

4-)this is my response message in response tab this is false.i want to see like 3 response message

How can i get response message in sproxy side ?? can anyone help me ?