I am trying to create an alert on a Custom Node Poller and the alert does not seem to take. I make sure to change my property to "Custom Node Poller" and then select the fields I want to watch. I tried hitting OK with either one of them entered alone and I get the same error. Does the alert engine not support alerting on Custom values? The picture shows exactly what I am polling on.
This is what I see on one of the nodes that I am trying to alert on.