Hi,
are you working with realtime? This is a example for a realtime system.
Well, if you choose in the Frontpanel Write to File or Read to File the case strukture will be executed and the VIs Write or Read to spreadsheet file are called. There you can wire a path or if you dont wire something there will automatically pop up a file dialog, where you can choose the file.
Just execute the vi and you will see how it works.
Greetings, RMathews
Ramona Lombardo
Applications Engineer, NI Germany
Certified LabVIEW Developer