Hello,
i just started working with pimatic and its great. But I have a problem calculating a variable.
In this case i want to calculate the CO2 in my aquarium with an exponential calculation.
But it doesn’t work.
I created a variable and in [Expr] i typed: "$karbonatharteaqua.input/2.8*10^(7.91)"
When i delete the “^” there is no complaining.
How do i type this formula so it works?
Please excuse my rusty english.

Exponential calculation

Welcome to pimatic forum!
I created a variable and in [Expr] i typed: “$karbonatharteaqua.input/2.8*10^(7.91)”
Please try using the pow() function here as follows:
pow($karbonatharteaqua.input/2.8*10, 7.91)
See also: https://pimatic.teamemo.com/Usage/FunctionsforVariablesandRules
"It always takes longer than you expect, even when you take into account Hofstadter's Law.", Hofstadter's Law

@mwittig thank you! it worked!