How do I check value in array some positions ago

Hello people! Long time no see.

I want to check a value 9 entries back from the final value of the array.

I tried to use

Array.At(Array.Width-10)

But verifying with the actual array data I feel the answer is not what I want.

What makes you feel this way?

do you have a capx example? from what you say, it should work unless you are out of bounds.

Thank you two.

I did a new capx with only these events and it seems I have bad "coding" earlier, so it is something else, indeed.

And if I try to go back beyond the start the return value is zero. Good to know too.