Aha! So you're using LabWindows and not Lookout. This particular section of the Discussion forum is for Lookout -- NI's HMI / SCADA and Industrial Automation Software. (Hence my question about Object, which Lookout uses.)
You may want to post your query again in the right section:
http://exchange.ni.com/servlet/ProcessRequest?RHIVEID=101&RPAGEID=8&RFORMNUMBER=3&RHIDETAG=TRUE&UCATEGORY_0=_318&UCATEGORY_S=0
Regards,
Khalid