study("Scalping Line", overlay=false)
src = input(close, title="Source")
percent = input(1.0,"Percent", type=input.float, step=0.1, minval=0)
mainperiod = input(100,"Main Period")
signalperiod = input(7,"Signal Period")
MA = sma(sma(src, ceil(mainperiod / 2)), floor(mainperiod / 2) + 1)
ssMA = MA>close+MA*percent/100 ? MA : MA<close-MA*percent/100 ? MA : close
signalline = sma(close,signalperiod)
ScalpLine = signalline-ssMA
k1=plot(ScalpLine,"SLI",color.maroon,2)
k2=plot(0,"")
color1= ScalpLine>=0 ? color.green : color.red
fill(k1,k2,color=color1,transp=80)
alertcondition(crossover(ScalpLine,0), title="BUY ALARM!", message="SLI BUY Signal!")
alertcondition(crossunder(ScalpLine,0), title="SELL ALARM!", message="SLI SELL Signal!")
Could you encode the open code in the tradingview above as MT4?