friend4you wrote: Wed Nov 28, 2018 3:34 am
In the post there are many indicators,seems causing confusing,try keep simple things for to better understand

They are all versions of the same. I cannot see, what may be unclear. The floating level version is most similiar to my request.
"Is it possible to get an alert with wav-file, that can be chosen, when one, two or three lines (as option) change slope in the same direction."
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I think x3 version alerting on every instance crossing zero (default parameters) but dont know what exact you looking for