[amibroker] need assistance in generating buy signal with zig indicator

["rijnaars" <rijnaa@xxxxxxx>]

_SECTION_BEGIN("ZIG - Zig");
P = ParamField( "Price field" );
change = Param("% change",5,0.1,25,0.1);
Plot( Zig(P, change), _DEFAULT_NAME(), ParamColor( "Color", colorCycle ), ParamStyle("Style") );

Condition1=Zig>Ref(Zig,-1); 
Condition2=Ref(Zig,-1)<Ref(Zig,-2);
Condition2=Zig<Ref(Zig,-1);

Buy= Condition1;
Sell= Condition2;

shape = Buy * shapeUpArrow + Sell * shapeDownArrow;//No same day buy sell possible 
PlotShapes( shape, IIf( Buy, colorGreen, colorRed ), 0, IIf( Buy, Low, High ) );;

_SECTION_END();

I get the next errors

ln6 col15: error 31 syntax error expecting "("
ln7 col15: error 31 syntax error expecting "("
ln8 col15: error 31 syntax error expecting "("
ln10 col16: error 29 variable condition1 used without having been initialized.
ln11 col17: error 29 variable condition1 used without having been initialized.




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