Netwatch on ROS7 False Down?

How can I configure the disabled state only when there is 100% lack of ping to the client?
I made a notification in Telegram and periodically it sends me that the client is offline and a minute later it comes back that it is online.
Although the ping did not disappear completely
winbox64_fAGktQtsOe.png
winbox64_MXPiYcsEQl.png
winbox64_tQLj8L3rM5.png
winbox64_2T6EX3ppde.png