Modifying the F-16C HUD

Evening all, I'm working on a small project to modify the F-16 HUD, and I've hit a roadblock

I'm in the mods folder, in the F-16/Cockpit/Scripts folder, under Displays/HUD/indicator/Pages/HUD_Common.lua

At the moment, I'm just trying to get a number on the HUD to change. I can make the element appear, but for some reason a parameter won't modify it like on other HUDs.

Here's my code that I'm adding to HUD_Common.lua:

local superSecretModStuff = addStrokeText("EVEN_MORE_SECRET_MOD_HUD_NAME", nil, STROKE_FNT_DFLT_100_NARROW, "RightCenter", {0, 0}, nil, {{"text_using_parameter",0,0}}, {"%2.1f"})
superSecretModStuff.element_params = {"TOP_SECRET_PARAMETER"}

I'm modifying the "TOP_SECRET_PARAMETER" in an avLuaDevice, and it is successfully being altered and set, as a second avLuaDevice is able to read the values and print them on screen. For some reason though, it doesn't show up on the HUD. if I change the first "nil" (this sets the value) to a number, a string, or anything at all, it does show up, but it doesn't change based on the parameter.

In short: I can get a string of numbers to display onto the HUD, but for some reason, I cannot get a parameter to change the numbers. I've tried (more or less) this same code in the F/A-18C HUD and it works absolutely fine.

Thanks for any help anyone can provide,

- Sly