Unsolved Dynamically change values for automation wing

I wanted to try some sort of basic active wing, without going too deep and messing with beams and other complex things.

I was able to put variables into wing and change it in tuning menu and thus changing wing properties

["EFixtureType::EFT_WING06", "EFixtureType::EFT_WING03", "EFixtureType::EFT_WING07", {"dragCoef":"$dragCoef", "liftCoef":"$liftCoef", "stallAngle":"$stallAngle"}],
["EFixtureType::EFT_WING06", "EFixtureType::EFT_WING02", "EFixtureType::EFT_WING03", {"dragCoef":"$dragCoef", "liftCoef":"$liftCoef", "stallAngle":"$stallAngle"}],

but I would like to do it thru lua and change them depending on car speed or brake (making an air brake)
But I am unable to push any values into it via lua.

Could you please show me ho to make lua and variable to push the value into wing stats for liftCoef and dragCoef

ideally into code

local M = {}
local p_dragkoef = 500
local function init(jbeamData)
M.jbeamData = jbeamData
end
local function updateGFX(dt)
electrics.values.p_dragkoef = 500
end
print("value:" ..p_dragkoef)
M.updateGFX = updateGFX
M.init = init
return M

["EFixtureType::EFT_WING06", "EFixtureType::EFT_WING02", "EFixtureType::EFT_WING03", {"dragCoef":variable_from_lua, "liftCoef":"$liftCoef", "stallAngle":"$stallAngle"}],