Hello,
If you are using LV 8, there is a built in function to perform a "make current value default" at end of you VI.
If LV 7 and older there are some tricks, that have been explained and re-explained on the forum, so do a search with "make current value default" and you'll find all you need.
Hope this helps.
We have two ears and one mouth so that we can listen twice as much as we speak.
Epictetus
Antoine Chalons