Invert Channel Value

Hi Udo,

thanks for this hint.
I’m asking myself why this is not mentioned in the docu, or is it?

One hurdle done, at least one mor to take:
The inline scripts fails to parse the input string to double because the string includes a unit, see below:
Failed to process script '| -Double.parseDouble(input).doubleValue': For input string: "0 W"
Is there a simple solution, or do I need to implement some string magic to get parsing into double to work?
This thread seems to go into the right direction, will check tomorrow…