Get Grid trading Code That Actually Works

//@version=5
indicator("Grid Trading Levels & Signals", shorttitle="Grid Trader", overlay=true)

// Input parameters
gridSizePips = input.float(50.0, "Grid Size (Pips)", minval=1.0)
numGridsUp = input.int(5, "Grids Above Price", minval=1)
numGridsDown = input.int(5, "Grids Below Price", minval=1)
showSignals = input.bool(true, "Show Buy/Sell Signals")
useAlerts = input.bool(true, "Enable Alerts")

// Pip to price conversion
pipValue = syminfo.mintick * (syminfo.type == "forex" ? 10 : 1)
gridSize = gridSizePips * pipValue

// Current price reference
price = close
basePrice = math.round(price / gridSize) * gridSize

// Generate grid levels
var line[] upperLines = array.new<line>()
var line[] lowerLines = array.new<line>()
if barstate.islast
    // Clear previous lines
    for i = 0 to array.size(upperLines) - 1
        line.delete(array.get(upperLines, i))
    for i = 0 to array.size(lowerLines) - 1
        line.delete(array.get(lowerLines, i))
    array.clear(upperLines)
    array.clear(lowerLines)
    
    // Draw upper grids
    for i = 1 to numGridsUp
        level = basePrice + (i * gridSize)
        l = line.new(bar_index - 50, level, bar_index + 50, level, color=color.blue, width=1, style=line.style_dashed)
        array.push(upperLines, l)
        label.new(bar_index, level, str.tostring(level, "#.####") + " Sell", style=label.style_label_down, color=color.red, size=size.small)
    
    // Draw lower grids
    for i = 1 to numGridsDown
        level = basePrice - (i * gridSize)
        l = line.new(bar_index - 50, level, bar_index + 50, level, color=color.green, width=1, style=line.style_dashed)
        array.push(lowerLines, l)
        label.new(bar_index, level, str.tostring(level, "#.####") + " Buy", style=label.style_label_up, color=color.lime, size=size.small)

// Signal logic: Buy on bounce from lower grid, Sell on bounce from upper
buyCondition = ta.crossover(low, basePrice - gridSize) and showSignals
sellCondition = ta.crossunder(high, basePrice + gridSize) and showSignals

// Plots
plotshape(buyCondition, "Buy Signal", shape.triangleup, location.belowbar, color.green, size=size.normal)
plotshape(sellCondition, "Sell Signal", shape.triangledown, location.abovebar, color.red, size=size.normal)

// Alerts
if useAlerts
    if buyCondition
        alert("Grid Buy Signal at " + str.tostring(close), alert.freq_once_per_bar)
    if sellCondition
        alert("Grid Sell Signal at " + str.tostring(close), alert.freq_once_per_bar)

// Background color for grid zones
bgcolor(price > basePrice + gridSize ? color.new(color.red, 95) : price < basePrice - gridSize ? color.new(color.green, 95) : na)