MFI Modified With Overbought Oversold Zone - Amibroker AFL Code

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_SECTION_BEGIN("MFI modified");
periods = Param( "Periods", 13, 2, 200, 1 );
Plot( MFI(periods), _DEFAULT_NAME(), ParamColor("Color", colorCycle ), ParamStyle("Style") );
_SECTION_END();

_SECTION_BEGIN("MFI short");
periods = Param( "Periods", 5, 2, 200, 1 );
Plot( MFI(periods), _DEFAULT_NAME(), ParamColor("Color", colorCycle ), ParamStyle("Style") );

UL= Param("Upper Limit",70,0,100,1);
LL= Param("Lower Limit",30,0,100,1);
PlotGrid(UL,colorYellow);    
PlotGrid(LL,colorYellow);

_SECTION_END();