[Resolved] how to add counter to views

[Author]

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[rexJ-2]

I am trying to:
use toolset example of adding a counter to views.
Regarding this problem toolset actually refer to an example of toolset own adding custom code snippets/hacks.
https://toolset.com/documentation/adding-custom-code/count-the-number-of-views-loop-iterations/
and
https://toolset.com/forums/topic/specifying-which-view-an-incrementor-shortcode-looks-at/
But the example is not working for me!!
Please tell me how to get this function to work when apparently the

 global $loop_n; 

variable not are set and where is this global var pointing to?
So this example allways turns 0 because of

if ( !isset( $loop_n ) ) {
        $loop_n = 0;
        return $loop_n;
    }

Looking forward to see a working example or how i can correct it!
Link to a page where the issue can be seen:
https://toolset.com/documentation/adding-custom-code/count-the-number-of-views-loop-iterations/
I expected to see:
an iteration number
Instead, I got:
allways get an 0

[rexJ-2]

It depends on the view and the <wpv-loop> inserted into that.
My issue is resolved now. Thank you!