Hello,
You may want to clarify your problem description. What kind of functionality do you need? If you simply need to keep track of something like a button click or an iteration count, you can use shift registers on the border of a while loop to accomplish this. You can read the LabVIEW on-line help for more information about shift registers.
If this suggestion doesn't help you, please let me know, and also make sure to describe in detail what you are trying to accomplish.
Have a nice weekend.
Sincerely,
Darren N.
NI Applications Engineer
