For advanced logic, you use VBA (Visual Basic for Applications) or Vijeo Designer Script. While powerful, the implementation is clunky compared to the Python or C# environments in competing software. Debugging scripts is often difficult.

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Before loading it onto hardware, use the built-in "Simulator" (F8 key). This runs the HMI application on your PC, allowing you to test navigation, tags, and alarms without any physical equipment. For advanced logic, you use VBA (Visual Basic