We have a same device with different variables where we need to show an output value in the widgets (visualization only) using formulas, for instance: output value 'power' = variable1 (current) * variable2 (tension). Is it possible to do it using formula directly in the widget settings (we tried it -as simple / fixed-, and it looks that only 1 variable can be used as a calculated output value)? Or is a analysis mandatory for this kind of requirement (create a new variable from the others)?