This worked for me as well, Robert, using the math directly in the push message
I found out it doesn’t work with the native logic “calculate a value” card, the result is an empty num var:
But, it works a little bit with better logic “Execute matjs expression” card, but the result stays zero
Again, in the push message it works fine.
Now I have to find out how to get the calculated value into the virtual thermometer…
