Thanks Koen for the reply
$err:=QPx_AcqRunSession ($protocol;$deviceName;$options;"IMG_ACQ_LAB_SESSION_HANDLER") IMG_ACQ_LAB_SESSION_HANDLER // This is the method that has the error QPx_AcqRunSession this method takes in the following parameters. Input parameter acqProtocol LONGINT Acquisition protocol ID Input parameter deviceName TEXT Device name Input parameter sessionOptions LONGINT Acquisition options Input parameter eventHandler TEXT Event handler method name IMG_ACQ_LAB_SESSION_HANDLER // This is the Event handler method name Thanks & Regards, Nisha -- Sent from: http://4d.1045681.n5.nabble.com/4D-Tech-f1376241.html ********************************************************************** 4D Internet Users Group (4D iNUG) New Forum: https://discuss.4D.com Archive: http://lists.4d.com/archives.html Options: https://lists.4d.com/mailman/options/4d_tech Unsub: mailto:4d_tech-unsubscr...@lists.4d.com **********************************************************************