IEngUserProfile profile = UserProfile.createWorkFlowUserProfile();
ExecutionProxy proxy = new ExecutionProxy();
proxy.setBiObject(biobj);
byte[] response = proxy.exec(profile, "WORKFLOW", "JPGBASE64");
// extract image from the response
String xmlRespStr = new String(response);
SourceBean xmlRespSB = SourceBean.fromXMLString(xmlRespStr);
logger.debug("response parsed into a sourcebean");