Happy to hear that.
You mean there is a QucsStudio example that is not working?
>Perhaps the documentation could be clear about this very common requirement?
What improvement do you suggest?
The F1 help page “Mathematical Functions” gives the definitions
max(x) – maximum of all values in xs
range(f,x1,x2) – y values of f whose x values lie between x1 and x2
It should be clear, that max() has only one parameter.