When trying to create a watch, you select a Cisco device, then go to information tab -> Thresholds and watches -> watches.
You will click on create watch button, and then, click on "attributes" button:
The "attributes selector" window will be opened:
However, when you search for the "cfwConnectionStatValue" attribute, nothing is found:
The "cfwConnectionStatValue" attribute is not available in the device model scope.
Release : 10.x
Component : Spectrum Core / SpectroSERVER
The scope of this attribute is limited to the application model. So, you must run a locater search for the "CiscoFirewallApp" application model for the related device, and create the watch there:
Now you will be able to see the attribute listed and available to create your watch expression (below is just an example):