Opmanager ping.properties documentation

We are using Opmanager to monitor some servers in a remote location over a VPN tunnel. This tunnel sometimes drops a couple of seconds which results in these servers getting a warning event 'One Poll Missed' and are being placed inactive for 5 minutes (until the next poll).

I want to change the 'ping behaviour' so the servers are marked offline after a couple failed ping retries and not just one.

I found the file C:\ManageEngine\OpManager\conf\Ping.properties. The file has the property:

count=4

Does this mean Opmanager sent 4 pings and received 0 replies? Or do all 4 pings need to succeed?

I also see the property 'retries'. What's the difference between 'count' and 'retries'?