Can't find GPS LED item in "/systems leds "

RouterOS General
1

I have a Ltap mini which has been upgrade to 6.47
I wan’t set my GPS LED when my lte1 interface is activiting .
I use winbox ,enter “system Leds”
but no GPS LEDs displayed .
snipaste_20200710_133158.png
So..How can I achieve the set my GPS LED?

I have open up the LTAP ,where I can see the led below the shell .
but why can’t I control it?