Firefly Sensor Data

Hi All,

I'm having difficulty extracting values from an analog luminosity sensor using an Arduino Read component through Firefly.

I am able to get proper values through the Arduino Serial Monitor when running the luminosity sensor example sketch (attached), and I am able to see values for the two analog pin inputs within the grasshopper environment via Firefly's Uno Read component, but the values are static.  I have a feeling I need to control the frequency time at which data is sampled from my luminosity sensor, but not quite sure how to amend the Firefly Firmata Sketch to achieve this (relatively new to Arduino).  

After reading another post, I suppose this has something to do with IC2?

Any thoughts?