Global config in xml

[EKE]

I dont know how to description the question i wanna ask......for example, I do this in Config.lua:

local EKPlates, ns = ...
 
    ns[1] = {} -- C, config
    ns[2] = {} -- G, globals (Optionnal)
 
local C, G = unpack(select(2, ...))
 
    -- config
    G.norFont = STANDARD_TEXT_FONT

It's fine but now I need to make a xml template:

<FontString parentKey="value" font="Interface\AddOns\EKPlates\media\font.ttf" justifyH="CENTER" outline="NORMAL">

how to get media/font/texture file config in xml?

I know this is wrong

<FontString parentKey="value" font=G.norFont justifyH="CENTER" outline="NORMAL">

but I dont know the correct way......