Hi,

do you anybody know, how work this fce?

thank's

What are you asking?

In the "indicators.h" is many indicators. In few is called this

valley0(Data)

my question, how this fce work.

What is "fce"? Did you mean "function"?

Indicators.c was not meant to compile in Zorro. You have two function overloads for valley(). In Zorro, both valley0() and valley1() are called valley(). They are both described in the manual:
https://zorro-project.com/manual/en/peak.htm