Averaging Fieldpoint Readings on Demand

Newbie Question:
 
I am taking data from a Compact Fieldpoint and the user would like a running
 average of a certain reading.  I am very close to making it work but c
an't quite get it. 
 
I have the Add Array Elements PtByPt VI in a case structure that I cont
rol.  I can make this VI count and average just the way I want to if I 
start from the moment I execute the VI but to average readings on demand I d
ecided to count loop iterat
ions in the false case and then subtract that from the loop iteration counts
 in the true case.  This did exactly what I want in taking me back to z
ero everytime I go to true.  The problem is when I did this my ave
rage dropped out. 
 
I have attached a basic example of what I have so far.  Any pointers wo
uld be appreciated.
 
Thanks


AVERAGE BETA.vi:
http://forums.ni.com/attachments/ni...13398/1/AVERAGE BETA.vi