WMA Cross over for Amibroker (AFL)

//
//
WMA1 = WMA(C,1);
WMA2 = WMA(C,120);

//  the buy and sell logic
//  buy when wma1 crosses from below wma2 to above wma2.
Buy = Cross(WMA1,WMA2);
Sell = Cross(WMA2,WMA1);

Short = Sell;
Cover = Buy;

Plot(Close, "price",colorBlue,styleBar);

//  plot the wma lines.
Plot(WMA1,"wma1",colorGreen,styleLine);
Plot(WMA2,"wma2",colorBlue,styleLine);

//  plot the buy and sell arrows.
shape = Buy * shapeUpArrow + Sell * shapeDownArrow;
PlotShapes(shape, IIf(Buy,colorGreen,colorRed), 0,
IIf(Buy,Low,High));

GraphXSpace = 5;