There are two problems in the way your are using the VI. First, the re-start averaging is set to "True" which mean you actually re-start your averaging every time. Next, to average correctly you need to place the VI in a loop (Typically a "For" loop if you are doing linear averaging or a "While" loop for exponential averaging). The VI automatically reset (restarts) it self the first time it is called. Then you can activate the restart boolean when you want to restart the avergaging. I have made a simple VI that shows how it work (see attachement).
