Vortex indicator should have a Vm+ and a Vm- but it is not indicated in pseudocode which line is used

"A vortex indicator (VI) is an indicator composed of two lines - an uptrend line (VI+) and a downtrend line (VI-). These lines are typically colored green and red respectively. A vortex indicator is used to spot trend reversals and confirm current trends."

Also, this ref says the same: https://school.stockcharts.com/doku.php?id=technical_indicators:vortex_indicator



I can see that both lines are calculated in the java but I do not see which line is being used in the pseudo-code so this is just a cosmetic pseudocode bug, nothing to be alarmed about.