How to change the moment to appear an arrow?

[Kerubin]

I want to edit ADX crosses to arrow appear 5 seconds before the end of candle? Is it possible? Thanks

[Carl Schreiber]

datetime ACTION = Time[0] + PeriodSeconds() - 5;

[William Roeder]

datetime ACTION = Time[0] + PeriodSeconds() - 5;
if( TimeCurrent() >= ACTION){ ...

Note if the code is in start and there is no tick during that 5 seconds, the code won't work. You'll have to use the timer.