Calling a pdk application from webdynpro application

Hi experts,
I have a reqiremet in the webdynpro application by clicking some link or button it has to call pdk application in external window ,and i want to pass the value from pdk application to webdynpro application .
thanks &regards,
ramani.

I tried testing it with the Webservice navigator, and getting the same error,
XML Deserialization Error. XML is not valid. Element [http://session.services.enterprise.mclarensoftware.com] is required in but can not be found.
however
request:
POST /mclaren/services/session HTTP/1.1
Host: localhost:50100
Content-Type: text/xml; charset=UTF-8
Connection: close
Cookie: <value is hidden>
Cookie: <value is hidden>
Content-Length: 696
SOAPAction: ""
<?xml version="1.0" encoding="UTF-8" ?><SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xs="http://www.w3.org/2001/XMLSchema"><SOAP-ENV:Body><pns:createSession xmlns:pns='http://session.services.enterprise.mclarensoftware.com'><pns:strTechnologyID>filenet</pns:strTechnologyID><pns:strConnection>http://mclglaweb006:8008/ApplicationEngine/xcmisasoap.dll</pns:strConnection><pns:strConnectionFriendlyName> </pns:strConnectionFriendlyName><pns:strUserName>davidp</pns:strUserName><pns:strPassword>nimbus</pns:strPassword><pns:strDomain> </pns:strDomain></pns:createSession></SOAP-ENV:Body></SOAP-ENV:Envelope>
response:
HTTP/1.1 200 OK
Connection: close
Server: SAP J2EE Engine/7.00
Content-Type: text/xml; charset=utf-8
Date: Thu, 29 Jun 2006 14:15:50 GMT
<?xml version="1.0" encoding="UTF-8"?><soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><soapenv:Body><createSessionResponse xmlns="http://session.services.enterprise.mclarensoftware.com"><createSessionReturn><code>0</code><detail xsi:nil="true"/><message xsi:nil="true"/><sessionID>filenet;http://mclglaweb006:8008/ApplicationEngine/xcmisasoap.dll;davidp; </sessionID><successful>true</successful>

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Calling a pdk application from webdynpro application

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