[Audacity-nyquist] transpose effect

[Matthias L. <mat...@gm...>]

hallo,

I have installed Audacity one week ago and I like the option to program 
effects myself with nyquist. I tried to understand the manual but 
somehow I don´t get some things...
What I want to do is this: Record something on Audacity, select a part 
of a track and change its pitch gradually (linear) without changing 
tempo or the other tracks.
But the transpose function does not do anything...
I tried to do (transpose 5 s) for example, but nothing happens. Later, 
the pwl function works fine with volume for example, so that won´t be 
the problem to make the change linear.
But why doesn´t nyquist accept that I want to transpose s?
Or is transpose wrong and (fmosc) better (??)
I hope someone can help me,
thanks,
Matthias