Argument value for F-18 HMD - i need to find a value

[hreich]

I am trying to fix code for exporting mfd buttons and MFD screens to ipad - and i need to find the correct argument_value for HMD brightness..Does anybody know how to find it...

The one that is used in the original code is  (136) and it doesnt work...

function MiscPanel(panel)
    WriteToLog("miscPanel called.")
    return string.format("MS%0.0f,%0.1f,%0.1f,%0.1f,%0.1f,%0.1f,%0.1f,%0.0f,%0.0f,%0.1f" ,
        panel:get_argument_value(49) --[[ 1 Master Arm Switch, ARM/SAFE ]],
        panel:get_argument_value(51) --[[ 2 Left MDI Brightness Selector Knob, OFF/NIGHT/DAY ]],
        panel:get_argument_value(76) --[[ 3 Right MDI Brightness Selector Knob, OFF/NIGHT/DAY ]],
        panel:get_argument_value(135) --[[ 4 IR Cooling Switch, ORIDE/NORM/OFF ]],
        panel:get_argument_value(136) --[[ 5 HMD OFF/BRT Knob ]],