Using more than one variable in a formula

Using more than one variable in a formula

@Mark Harding

Is it possible to use more than one variable in a widget formula.
For example I have a variable called “revolutions” which is depicted on a bar graph where the variable comes from my IOT endpoint and then I made a step button widget to change a “calibration” variable. So I want to divide the “revolutions’” by the “calibration” in a formula applied to the bar graph.