drawing arrows in mql4 across specific candles in history

External question — Stack Overflow Stack Exchange Author: prodisoft Original post: https://stackoverflow.com/questions/66132478 License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/ Adaptation: HTML converted to plain text; contact email addresses removed. I need create a code to loop across the history in a chart, i need put an arrow on every candlestick on time GMT00 like the image, thanks for the help and suggestions

External answer — Stack Overflow Stack Exchange Author: prodisoft Original post: https://stackoverflow.com/a/66148459 License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/ Adaptation: HTML converted to plain text; contact email addresses removed. For now i solve it using this code in OnInit() function for(int i=0;i<Bars;i++) { if(TimeHour(Time[i]) == 0) { // ObjectCreate(i, OBJ_ARROW, 0, Time[i], High[i]+100*Point); //draw an up arrow ObjectSet(i, OBJPROP_STYLE, STYLE_SOLID); ObjectSet(i, OBJPROP_ARROWCODE, SYMBOL_ARROWDOWN); ObjectSet(i, OBJPROP_COLOR, Yellow); } }