Ok so I will write the trigger expression under the message name as shown in your second image? And yes I spent a better part of my day in the manual and help context but your help here is 100x more than I had all day I will try this first thing tomm am. My only concern is getting the old and new set point displayed versus just a message saying they were changed as if the change created a problem they will need to be able to know what the old setpoint was