Get Moving average crossing strategy Code That Actually Works

//@version=5
indicator("Moving Average Crossover Strategy", shorttitle="MA Cross", overlay=true)

// Input parameters for flexibility
fastLength = input.int(9, title="Fast MA Length", minval=1)
slowLength = input.int(21, title="Slow MA Length", minval=1)
maType = input.string("EMA", title="MA Type", options=["SMA", "EMA"])
useAlerts = input.bool(true, title="Enable Alerts")

// Function to calculate MA based on type
ma(source, length, ma_type) =>
    ma_type == "SMA" ? ta.sma(source, length) : ta.ema(source, length)

// Calculate moving averages
fastMA = ma(close, fastLength, maType)
slowMA = ma(close, slowLength, maType)

// Detect crossovers
bullCross = ta.crossover(fastMA, slowMA)
bearCross = ta.crossunder(fastMA, slowMA)

// Plot the moving averages
plot(fastMA, color=color.blue, linewidth=2, title="Fast MA")
plot(slowMA, color=color.red, linewidth=2, title="Slow MA")

// Visual signals: shapes on crossovers
plotshape(bullCross, style=shape.triangleup, location=location.belowbar, color=color.green, size=size.small, title="Bullish Cross")
plotshape(bearCross, style=shape.triangledown, location=location.abovebar, color=color.red, size=size.small, title="Bearish Cross")

// Background color for trend
bgcolor(fastMA > slowMA ? color.new(color.green, 95) : color.new(color.red, 95), title="Trend Background")

// Alerts for crossovers
if useAlerts
    if bullCross
        alert("Fast MA crossed above Slow MA - Bullish Signal!", alert.freq_once_per_bar)
    if bearCross
        alert("Fast MA crossed below Slow MA - Bearish Signal!", alert.freq_once_per_bar)

// Table for current status (optional info)
var table infoTable = table.new(position.top_right, 2, 2, bgcolor=color.white, border_width=1)
if barstate.islast
    table.cell(infoTable, 0, 0, "Fast MA", text_color=color.blue)
    table.cell(infoTable, 1, 0, str.tostring(fastMA, "#.##"), text_color=color.blue)
    table.cell(infoTable, 0, 1, "Slow MA", text_color=color.red)
    table.cell(infoTable, 1, 1, str.tostring(slowMA, "#.##"), text_color=color.red)