get wsdl value from xml file

I have the following xml file:

<properties>
  <type>1</type> <!-- 1 or 2>

  <prop1> test </prop1>
  <prop2> test2 </prop2>
</properties>

and the wsdl file:

<definitions>
  <xmlProp>test</xmlProp>
</definitions>

I want wsdl tag "xmlProp" get value from xml tag's value prop1. In addition i want to have an if statement in wsdl and if xml tag "type" is 1 the wsdl tag xmlProp get the prop1 value otherwise get prop2 value.

Is there any way to do this?