Invoking a Siebel webservice after completion of checkin process in WebCenter Content

Experts,

Using WebCenter content 11g, on WebLogic 10.3, Siebel 8.2, Windows environment, on Oracle DB.

I am attempting to set up WebCenter Content (11g) to invoke a Siebel provided web service after someone checks in a document with specific metadata.  For this to occur, I have created a Java class which implements the FilterImplementor interface.  In the doFilter method, I am invoking the Siebel web service Proxy which I created using jdeveloper by importing the Siebel provided WSDL.  When I run the code from jdeveloper it performs the appropriate update in Siebel by invoking the web service. But it doesn't work when invoked from WebCenter Content.