This example uses TestStand 2012 and LabVIEW 2012 to demonstrate calling a LabVIEW VIs through dynamic dispatching.
The LabVIEW OOP example included ships with 2012 and can be found in: C:\Program Files\National Instruments\LabVIEW 2012\examples\lvoop\DynamicDispatching
In this example the Call OOP LabVIEW.seq will call the "Get Cargo Capacity.vi" in Vehicle passing both a Vehicle object and a Truck object to show the same behavior.
Running with Single pass a successful run will give you the following output:
"Truck1CargoCapacity = 1, Truck2CargoCapacity= 2, Vehicle3CargoCapacity = 3."