The indicator marks all performed trades with short horizontal lines, if such trades have corresponding arrows.

//+------------------------------------------------+ 
//|  Indicator input parameters                    |
//+------------------------------------------------+ 
//---- Indicator display settings
input string Sirname="AutoTradeLevels";  // The name for the indicator labels
input uint Len=3;  // The length of price labels as the number of candlesticks

Fig. 1. The AutoTradeLevels indicator