My script

//version=5
strategy("Algo Bot Starter (EMA+ATR, RR, Webhook)",
overlay=true,
initial_capital=10000,
commission_type=strategy.commission.percent,
commission_value=0.02,
calc_on_every_tick=false,
calc_on_order_fills=true,
pyramiding=0,
process_orders_on_close=true)

//================ Inputs ================
emaFastLen = input.int(20, "EMA Fast", minval=1)
emaSlowLen = input.int(50, "EMA Slow", minval=1)
atrLen = input.int(14, "ATR Length", minval=1)
atrMultSL = input.float(2.0, "SL = ATR x", step=0.1)
rr = input.float(1.5, "Risk:Reward (TP = RR x Risk)", step=0.1, minval=0.2)
riskPct = input.float(1.0, "Risk % per Trade", step=0.1, minval=0.1, maxval=5)
slipPips = input.float(0.0, "Extra buffer (price units)", step=0.0001)
sessionFilt = input.session("0000-2400", "Trading Session")
useSession = input.bool(false, "Use Session Filter?")
closeOnFlip = input.bool(true, "Close & Reverse on signal flip?")
useBarClose = input.bool(true, "Signal on Bar Close? (recommended)")

//================ Helpers ================
inSess = useSession ? time(timeframe.period, sessionFilt) : true
emaFast = ta.ema(close, emaFastLen)
emaSlow = ta.ema(close, emaSlowLen)
atr = ta.atr(atrLen)

// Cross conditions (optionally on bar close)
bull = useBarClose ? ta.crossover(emaFast, emaSlow) : ta.cross(emaFast, emaSlow) and (emaFast > emaSlow)
bear = useBarClose ? ta.crossunder(emaFast, emaSlow) : ta.cross(emaFast, emaSlow) and (emaFast < emaSlow)

//================ Risk & Position Sizing ================
// ملاحظة: TradingView ما يعرف رصيدك الحقيقي، فاعتمدنا على initial_capital أو عدّل أدناه يدويًا
equity = strategy.equity
riskAmount = equity * (riskPct/100.0)

// سنحسب الكمية حسب المسافة إلى وقف الخسارة بالوحدات السعرية (تقريب عام)
calcQty(entryPrice, slPrice) =>
riskPerUnit = math.abs(entryPrice - slPrice)
riskPerUnit := risk