arrow indicator with no errors but does not display

[jayind]

Firstly, I'm new so apologies if I'm posting in the wrong place and please let me know. I have an indicator that should show arrows when a candle with no wick one side of the candle forms. However, it does not show any arrows and I do not know why. No errors in meta editor. I was wondering if someone could take a look. It may be a tiny thing I am not seeing.

Thanks in advance.