Poe passtrough mikrotik hAP ac

Hi,
im am trying to activate the poe passtrough on the mikrotik hAP ac aka RB962UiGS-5HacT2HnT
The poe is linked to gpio 3
so i added on /etc/config/system

uci delete system.poe_passthrough
uci set system.poe_passthrough=gpio_switch
uci set system.poe_passthrough.name="PoE Passthrough"
uci set system.poe_passthrough.gpio_pin=3
uci set system.poe_passthrough.value=1
uci commit
reload_config

and also tryied to do

echo 0 > /sys/class/gpio/gpio3/value

and

echo 1 > /sys/class/gpio/gpio3/value

I see le led change to red but the accesspoint connect still not powered

I have found this commit https://github.com/openwrt/openwrt/commit/c2140e32ce32b9cc60f7d408e20bdf45dce6a634

Not sure if that mean gpio 3 have to be low & direction out in order to switch on the poe passwtrough?

If it's the case do need to export gpio2 and to change the direction to in & statut to high?

I tryied

echo 2 > /sys/class/gpio/export
echo 1 > /sys/class/gpio/gpio3/value
echo in > /sys/class/gpio/gpio2/direction
root@mikrotik:~# cat /sys/kernel/debug/gpio
gpiochip0: GPIOs 0-31, parent: platform/ath79-gpio, ath79-gpio:
 gpio-2   (                    |sysfs               ) in  lo    
 gpio-3   (                    |POE power           ) out lo    
 gpio-12  (                    |rb:green:user       ) out hi    
 gpio-13  (                    |USB power off       ) out hi    
 gpio-20  (                    |Reset button        ) in  hi  

but both must be high or low, the change fail with error

root@mikrotik:~# cat /sys/kernel/debug/gpio
gpiochip0: GPIOs 0-31, parent: platform/ath79-gpio, ath79-gpio:
 gpio-2   (                    |sysfs               ) in  hi    
 gpio-3   (                    |POE power           ) out hi    
 gpio-12  (                    |rb:green:user       ) out lo    
 gpio-13  (                    |USB power off       ) out hi    
 gpio-20  (                    |Reset button        ) in  hi    

root@mikrotik:~# echo 1 > /sys/class/gpio/gpio3/value
root@mikrotik:~# cat /sys/kernel/debug/gpio
gpiochip0: GPIOs 0-31, parent: platform/ath79-gpio, ath79-gpio:
 gpio-2   (                    |sysfs               ) in  lo    
 gpio-3   (                    |POE power           ) out lo    
 gpio-12  (                    |rb:green:user       ) out lo    
 gpio-13  (                    |USB power off       ) out hi    
 gpio-20  (                    |Reset button        ) in  hi    

could you help ?