Convert Pinescript indicator @version=2 to @version=4 Pinescript Tradingview format

I need you to convert Pinescript code to latest version#4 format.

I will require to provide source code as demontration before job approval.

Please pay attention this job has nothing to do with MQL4 or MQL5 languages.

study("Multitimeframe Supertrend", overlay = true)

Factor=input(4, minval=1,maxval = 100)
Pd=input(10, minval=1,maxval = 100)

Up=hl2-(Factor*atr(Pd))
Dn=hl2+(Factor*atr(Pd))

TrendUp=close[1]>TrendUp[1]? max(Up,TrendUp[1]) : Up
TrendDown=close[1]<TrendDown[1]? min(Dn,TrendDown[1]) : Dn

Trend = close > TrendDown[1] ? 1: close< TrendUp[1]? -1: nz(Trend[1],1)
Tsl = Trend==1? TrendUp: TrendDown

Trend15 = security(tickerid,"15",Trend)
Trend30 = security(tickerid,"30",Trend)
Trend60 = security(tickerid,"60",Trend)
Trend120 = security(tickerid,"120",Trend)
Trend240 = security(tickerid,"240",Trend)
TrendD = security(tickerid,"D",Trend)
TrendW = security(tickerid,"W",Trend)

Tsl15 = security(tickerid,"15",Tsl)
Tsl30 = security(tickerid,"15",Tsl)
Tsl60 = security(tickerid,"60",Tsl)
Tsl120 = security(tickerid,"120",Tsl)
Tsl240 = security(tickerid,"240",Tsl)
TslD = security(tickerid,"D",Tsl)
TslW = security(tickerid,"W",Tsl)

linecolor15 = Trend15 == 1 ? green : red
linecolor30 = Trend30 == 1 ? green : red
linecolor60 = Trend60 == 1 ? green : red
linecolor120 = Trend120 == 1 ? green : red
linecolor240 = Trend240 == 1 ? green : red
linecolorD = TrendD == 1 ? green : red
linecolorW = TrendW == 1 ? green : red

plot(Tsl15, color = linecolor15 , style = line , linewidth = 1,title = "SuperTrend15")
plot(Tsl30, color = linecolor30 , style = linebr , linewidth = 1,title = "SuperTrend30")
plot(Tsl60, color = linecolor60 , style = circles, linewidth = 1,title = "SuperTrend60")
plot(Tsl120, color = linecolor120 , style = cross,linewidth = 1,title = "SuperTrend120")
plot(Tsl240, color = linecolor240 , style = line , linewidth = 1,title = "SuperTrend240")
plot(TslD, color = linecolorD , style = line , linewidth = 2,title = "SuperTrendD")
plot(TslW, color = linecolorW , style = line , linewidth = 2,title = "SuperTrendW")