MAC-Ping is not allow in the V5 and the latest?

Good day..

Dear buddy..
i have come out a script to monitor the wlan1 connection.
when it not able to ping that remote wlan1 for 10 times, it will auto reboot.

i have try to mac-ping via winbox and it’s shown failed, i have double confirmed that, the mac-server ping is enable.

here is my script which result is the same as what i got reply from the winbox.

:if ([/ping [/interface wireless registration-table get [find interface=“wlan1”] mac-address] count=10]=0) do={/system reboot}


is this because of the mikrotik have disable the mac ping feature?

thanks.