How do I find the second repeated value in an array (not first or last value)?

I think we need some context here.

Usually with arrays you are looping through them, or if you use them statically then you are just referencing the array positions with CONSTANTS.

If you want to find the first 15, loop until you get 15

to find others you would need a second local variable that counts how many you found, you stop at the desired one with Stop Loop.

Jobel is right.

Local variables Tracker = 0;

For each array X elements

- if array.curValue = 15

-- Add 1 to Tracker

-- if Tracker = 2

---- array.curX = SECOND_15_LOCATION

---- Stop Loop