// Downloaded From https://www.WiseStockTrader.com
SetChartOptions(0,0,ChartGrid30 | ChartGrid70 ); 
r = MFI(7); 
Overbought=70;
Oversold=30;
Plot(Overbought,"Overbought",colorRed);
Plot(Oversold,"Oversold",colorGreen);
Plot( r, "MFI", colorBlack ); 
PlotOHLC( r,r,50,r, "", IIf( r > 50, colorRed, colorGreen ), styleCloud | styleClipMinMax, 30, 70 );