TREND INDICATOR WITH CCI for Amibroker (AFL)

//TREND INDICATOR
// by Sudesh Jha sudeshjha@gmail.com
//when the CCI cross zero line the trend is up & when it cross from top to down - zero like its sell trend

_SECTION_BEGIN("CCI");
periods = Param( "Periods", 14);
Plot( CCI( periods ), _DEFAULT_NAME(), ParamColor( "Color",  colorBlue ), ParamStyle("Style")  );
_SECTION_END();

_SECTION_BEGIN("CCI1");
periods = Param( "Periods", 50);
Plot( CCI( periods ), _DEFAULT_NAME(), ParamColor( "Color",  colorRed ), ParamStyle("Style")  );
_SECTION_END();


Plot(0,"",colorGreen,styleLine);

//Plot(50,"",colorYellow,styleLine);

//Plot(100,"",colorWhite,styleLine);


Buy = Cross( CCI(50), 0 )
AND CCI(14) > CCI(50);

Sell = Cross( 0,CCI(50))
AND CCI(14) < CCI(50);



shape = Buy * shapeUpArrow + Sell * shapeDownArrow;
PlotShapes( shape, IIf( Buy, colorBlue, colorRed ));