When you are building the alert and you add an action "Send an email / page" for example, there is a button to the far right
that allows you to simulate the alert. Once you click that button you can choose a test node and then either Simulate or Execute.
Simulate shows you what the results will look like with out taking any action
Execute will actually force the action to execute even if the trigger condition is not currently met. (Screen shots below)
The simulate functionality never made much sense to me. Not enough feedback. I’ll check it out again.
Sent from my iPhone
You can set the the threshold lower temporarily and do the test.