LabVIEW 8.0 and later
With the introduction of the project in LabVIEW 8.0, you first need to enable the passing of command line arguments in the application's build specification. In order to do this follow these steps:

1. Right click Build Specifications in the Project Explorer of the completed project
2. Select new and then Application (EXE)
3. Navigate to the Advanced category
4. Check the Pass all command line arguments to application box