Variables Obtained from LMS (AICC)

My question relates to a much older thread (here) concerning pulling variables from an LMS with LS, but that one got a little bit far afield from the original question. The tips from Phil and others early on in that thread worked quite well for me as far as obtaining the LMS StudentName with a JS trigger. I'm interested in calling other student related data from the LMS, such as their employee ID, which is registered in the admin side of the LMS db label as 'custom field #2'. I checked in the AICCfunctions.js file of the story output and didn't find any other relevant variables defined there. Is there a way to pull other related data from the LMS or is the StudentName the only callable variable? Thanks to all for the helpful info in this forum!