Fix Simple Indicator

Hello,

I have a simple MT5 indicator that displays the volume of upticks and volume of downticks. It works perfectly for Forex symbols however for non forex symbols i.e SPY500 it displays negative ticks and live decreasing ticks which shouldn't be possible. I also want it highlighted when the upticks diverge from the downticks and vice versa, based on this logic:

1: Upticks value increases from last candle and downticks decreases from last candle - paint arrow

2: Upticks decreases from last candle and downticks increases from last candle - paint arrow

Please take a look at the indicator and attach it to the chart so that you understand what it exactly is I mean. I need someone who can fix this indicator to work for non-forex symbols and add the painting feature to highlight divergences.

Many thanks for reading,

MK.