How does the anemone loop counter work?

Hi everyone,
I’m starting with the Anemone pluggin and the loops, and I don’t understand how the “counter” variable works.
In the exemples I’ve made, I’m expecting panel A to show the sequence 0 1 2 but instead I get a 01012. Why do I get those extra digits at the beginning ?
Looking through the three examples there, I’m a bit confused with the results shown in the panels, for instance in the blue example I’m expecting a 1 2 3 sequence and again I get some extra digits.
Can someone explain to me where are my mistakes ? Thanks !