import ta
import numpy as np
import matplotlib.pyplot as plt

# Set up inputs
src = close
keyvalue = 3
atrperiod = 10
nLoss = keyvalue * ta.average_true_range(high, low, close, atrperiod)

# Initialize variables
xATRTrailingStop = np.zeros_like(src)
pos = np.zeros_like(src)

# Calculate xATRTrailingStop and position values
for i in range(1, len(src)):
    if src[i] > xATRTrailingStop[i-1]:
        iff_1 = src[i] - nLoss[i]
    else:
        iff_1 = src[i] + nLoss[i]
    
    if src[i] < xATRTrailingStop[i-1] and src[i-1] < xATRTrailingStop[i-1]:
        iff_2 = min(xATRTrailingStop[i-1], src[i] + nLoss[i])
    else:
        iff_2 = iff_1
        
    if src[i] > xATRTrailingStop[i-1] and src[i-1] > xATRTrailingStop[i-1]:
        xATRTrailingStop[i] = max(xATRTrailingStop[i-1], src[i] - nLoss[i])
    else:
        xATRTrailingStop[i] = iff_2
    
    if src[i-1] > xATRTrailingStop[i-1] and src[i] < xATRTrailingStop[i-1]:
        pos[i] = -1
    else:
        pos[i] = pos[i-1]
    
    if src[i-1] < xATRTrailingStop[i-1] and src[i] > xATRTrailingStop[i-1]:
        pos[i] = 1
        
# Plot xATRTrailingStop and buy/sell signals
buy = np.where(np.diff(np.sign(xATRTrailingStop - src)) > 0)[0]
sell = np.where(np.diff(np.sign(src - xATRTrailingStop)) > 0)[0]
xcolor = np.where(pos == -1, 'red', np.where(pos == 1, 'green', 'blue'))

plt.plot(xATRTrailingStop, color=xcolor)
plt.scatter(buy, src[buy], color='green', marker='^', s=100)
plt.scatter(sell, src[sell], color='red', marker='v', s=100)

plt.show()


———— MQL5

// Set input parameters
input float KeyVaule = 3.0;
input int ATRPeriod = 10;

// Set variables
double xATR, nLoss, xATRTrailingStop, pos;
double src = Close[0];

// Set ATR calculation
xATR = iATR(_Symbol, _Period, ATRPeriod);

// Set nLoss calculation
nLoss = KeyVaule * xATR;

// Set xATRTrailingStop calculation
if (src > iCustom(_Symbol, _Period, "xATRTrailingStop"))
    xATRTrailingStop = src - nLoss;
else if (src < iCustom(_Symbol, _Period, "xATRTrailingStop") && 
         Close[1] < iCustom(_Symbol, _Period, "xATRTrailingStop"))
    xATRTrailingStop = MathMin(iCustom(_Symbol, _Period, "xATRTrailingStop"), src + nLoss);
else if (src > iCustom(_Symbol, _Period, "xATRTrailingStop") && 
         Close[1] > iCustom(_Symbol, _Period, "xATRTrailingStop"))
    xATRTrailingStop = MathMax(iCustom(_Symbol, _Period, "xATRTrailingStop"), src - nLoss);

// Set position calculation
if (Close[1] > iCustom(_Symbol, _Period, "xATRTrailingStop") && 
    Close[0] < iCustom(_Symbol, _Period, "xATRTrailingStop"))
    pos = -1;
else
    pos = Close[1] < iCustom(_Symbol, _Period, "xATRTrailingStop") && 
          Close[0] > iCustom(_Symbol, _Period, "xATRTrailingStop") ? 1 : pos[1];

// Set color for trailing stop line
color xColor = pos == -1 ? clrRed : pos == 1 ? clrGreen : clrBlue;

// Draw trailing stop line on chart
ObjectCreate("xATRTrailingStop", OBJ_TREND, 0, 0, Time[0], iCustom(_Symbol, _Period, "xATRTrailingStop"));
ObjectSet("xATRTrailingStop", OBJPROP_COLOR, xColor);

// Buy and sell signals
bool buy = Close[0] > iCustom(_Symbol, _Period, "xATRTrailingStop");
bool sell = Close[0] < iCustom(_Symbol, _Period, "xATRTrailingStop");

// Plot buy and sell signals
if (buy)
    ObjectCreate("Buy", OBJ_LABEL, 0, 0, Time[0], High[0]);
else
    ObjectDelete("Buy");
if (sell)
    ObjectCreate("Sell", OBJ_LABEL, 0, 0, Time[0], Low[0]);
else
    ObjectDelete("Sell");

// Set buy and sell alerts
if (buy)
    Alert("UT BOT Buy");
if (sell)
    Alert("UT BOT Sell");

// Trading logic
if (buy)
    OrderSend(_Symbol, OP_BUY, 0.1, Ask, 0, 0, 0, "UT BOT Buy", 0, 0, clrGreen);
if (