How to retrieve an offset from a past event? Pine Script V5

Question

SomethingHappens[0] happens in the present so it happens at same candle as close[0] .

But SomethingHappens[1] (if I'm not wrong that we can address events in a series this way) happened in the time of close[x] where x is anything, eg 2 , 3 … 29 …, etc. – it changes all the time as the chart flows. We want to know what's that x in this close[x] to address the candle of that SomethingHappens[1] .

Is there a way to retrieve that offset?

Answer 1

It sounds like you can use ta.barssince() for this.

x = ta.barssince(SomethingHappens)