How do I UNset a value under /system logging action ?

How do I unset a value under /system logging action? I set the remote src-address to a value, but I see no way to unset it.

There is no unset under this configuration stanza. Also, I cannot remove **remote** since its a default rule.

So, how do I remove the src-address value in /system logging action?




[olof@cpe] /system logging action> export
# feb/18/2020 10:34:37 by RouterOS 6.46.2
# software id = 49YY-K5MK
#
# model = RouterBOARD 3011UiAS
# serial number = xxx
/system logging action
set 3 remote=172.18.42.12 remote-port=1516 src-address=172.24.32.1

You just need to set all values to their default, I think.
Remote and src address 0.0.0.0 port 514