[amibroker] Assistance with Momentum Indicator - Graphic Format

["Ken Hendo" <sfehendo@xxxxxxxxxxxx>]

Hi All

Can someone point me in the correct direction or advise where I am 
going wrong with this formular.

Many thanks

Ken


_SECTION_BEGIN("Momentum");
function Momentum( array, period )
{
  return array - Ref( array, -period );
}
Plot( Momentum( ParamField( "Field" ), Param("Period", 10, 1, 100 ) ),
		_DEFAULT_NAME(), ParamColor("Color", ColorCycle ) );

r = Momentum ();
Plot( r, " Momentum ", colorBlue | styleThick);
Plot( 0,"",colorLightGrey, styleLine, 1);

PlotOHLC( r,r,0,r, // set the midpoint of the chart to 0 

"", IIf( r < 0 , colorRed ,// color below 0 set to red
 colorGreen // color above 0 is green
 ), styleCloud | styleClipMinMax, 0, 0); /
_SECTION_END();


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