wt.part.WTPart part = (wt.part.WTPart)primaryBusinessObject;
//Get check out folder for the current user in the session
wt.folder.Folder checkoutFolder = wt.vc.wip.WorkInProgressHelper.service.getCheckoutFolder();
//Check out object
wt.vc.wip.CheckoutLink chklink = wt.vc.wip.WorkInProgressHelper.service.checkout(part, checkoutFolder, "Check out comment");
wt.part.WTPart wrk = (wt.part.WTPart) chklink.getWorkingCopy();
System.out.println("\nChecked out WTPart ......"+wrk.getName()+"\t"+wrk.getCheckoutInfo());
com.ptc.core.lwc.server.PersistableAdapter pbo = new com.ptc.core.lwc.server.PersistableAdapter(wrk, null, null, null);
System.out.println("\nGot pbo...."+pbo.toString());
pbo.load("StringAttribute","BooleanAttribute","DateAttribute","IntegerAttribute");
System.out.println("Loading Attributes");
System.out.println("StringAttribute : "+pbo.get("StringAttribute"));
System.out.println("BooleanAttribute : "+pbo.get("BooleanAttribute"));
System.out.println("DateAttribute : "+pbo.get("DateAttribute"));
System.out.println("IntegerAttribute : "+pbo.get("IntegerAttribute"));
pbo.set("StringAttribute", StringAttributeVariable);
pbo.set("BooleanAttribute", BooleanAttributeVariable);
pbo.set("IntegerAttribute", new java.lang.Long(IntegerAttributeVariable));
//Date attribute is more complex
java.text.DateFormat df = java.text.DateFormat.getDateInstance(java.text.DateFormat SHORT);
String tempDate= DateAttributeVariable;
java.util.Date objectDate = df.parse(tempDate);
pbo.set("DateAttribute", new java.sql.timestamp(objectDate.gettime()));

wt.fc.Persistable p = pbo.apply();
//Modify attributes
wt.fc.PersistenceHelper manager.modify(p);
try
{
// Check in object
wt.vc.wip.WorkInProgressHelper.service.checkin((wt.vc.wip.Workable) p, "Check in comment");
}
catch (wt.util.WTException e)
{
e.printStackStrace();
}
catch (wt.util.WTPropertyVetoException e)
{
e.printStackTrace();
}