[sr-dev] custom module and variables

Hey list, Due to technical reasons we are running openser1.0.1 on a tiny embedded system. I am exploring the way to pass a PV's value into the exported function from my module, and returning back a value from the function via the use of some other PV or a newly added AVP. I am not sure how to follow this, as basic avpops operations aren't working for me in the config file itself (without introducing my custom module at all). Could someone explain or provide an example as to how this would work? I have taken a look at http://www.asipto.com/pub/openser-devel-guide/ regarding adding a new module but I'm not quite sure as to the details regarding avops and such. Regards.