@gabrielebrignoli First the Block 211 yellow dot may not be your intention.
If you want to open a trade on each change of the indicator only, you'd have a condition block where you compare indicator value of candle ID2 with candle ID1 for instance.
If buy signal is "0", you'd check if ID2 was "1" and ID1 is "0" .. If it's really binary you could do like ID2 > ID1 for long trades. And vice-versa for short trades ID2 < ID1
Does that make sense?