Monitor & alerting On/Off state of setting in MS SQL table


I’m trying to create an alert if a value in the settings table on an MS SQL server gets changed from 1 to 0 (on to off).

I have the alert configured as shown below:

It doesn’t show the column labels, but ‘Series 1-6’, I’m not sure if this is okay?

When I save the alert, I get the below error after a while:

invalid format of evaluation results for the alert definition : frame cannot uniquely be identified by its labels: has duplicate results with labels {}

Any ideas how to fix this?