Java HotSpot Virtual Machine

Hi..

When im calling a VB method in Java through Jacob,i encontered the following exception

com.jacob.com.ComFailException: A COM exception has been encountered:

At Invoke of: RetrieveTask

Description: Does not support a collection.

at com.jacob.com.Dispatch.invokev(Native Method)
at com.jacob.com.Dispatch.invokev(Dispatch.java:804)
at com.jacob.com.Dispatch.callN(Dispatch.java:440)
at com.jacob.com.Dispatch.call(Dispatch.java:531)
at com.ivesia.etg.sync.client.Activities.getNewRecords(Activities.java:1148)
at com.ivesia.etg.sync.client.ActivitiesDataSync.getNewRecords(ActivitiesDataSync.java:228)
at com.ivesia.etg.sync.SyncController.syncTables(SyncController.java:269)
at com.ivesia.etg.sync.SyncController.sync(SyncController.java:190)
at client.SyncTool$RunSync.run(SyncTool.java:730)


The code where i called the VB method is specified below

public Document getNewRecords()
{
Document docResult = null;
DOMUtil objDOMUtil = null;
try {

objDOMUtil = new DOMUtil();
Dispatch testdoc = new Dispatch("sync.OutlookSync");
com.jacob.com.Variant varStr = Dispatch.call(testdoc, "RetrieveTask", strDeviceId, strUserId);

//Retreive Task is the method that is caled from VB.This method gives XML file as an input to the Java File.

String strVBDoc = varStr.getString();
if(!Util.isEmpty(strVBDoc.trim())) {
docResult = objDOMUtil.stringToXML(strVBDoc);
}
}catch(Exception ex) {
ex.printStackTrace();
}
finally {
}
return docResult;
}


Pls.can any one help me out to solve this problem