How to get index for past Nth signal

Hi Support,

Is there a way to get the candle index for past Nth signal

Option tried so far

MyIndicatorSeries.LastValue & MyIndicatorSeries.Last are of type double

MyIndicatorSeries.Count - 1 gives out the index for the Last signal only (also got the 2nd Last with variabel manipulation)

Post signal candle count may be another option, didn't try to store multiple past value yet.

Is there some built-in function available to get such data or something i missed with above methods

any help would be highly appreacited,

Thanks in advance