How to get value from Zenpage component from Chrome/edge addon JS

Hi:

I have been adapting the IRIS WHIZ addon as part of the contest. I will soon fork the code on github so the changes are available. 

The next phase is I am storing the date from and to time for a more complete search cache 

zenPage.getComponent(36).value

it works in the chrome console ok 

I'm not sure in external JS how to set the page it is on as a zenpage to use the zenpage functions