Nagios Plugin OK: checking vs OK (no colon after)

The funny thing is, the results are coming the same either way that I run the plugin - it comes back OK. Due to the sensitivity of the IP addresses and our company information, I’ve blanked out that data in this screenshot:

Here’s what the services screen looks like:

It’s not showing a message as to why its failing in the Services view, but clearly, the check result comes back with an OK.

That’s why i was wondering if the check for an OK is looking for OK: with the colon and this plugin isn’t throwing a colon at the end of the result…