[amibroker] Learning to Code

[McGuyVr70]

I am trying to code the strategy "Trading in the Middle Zone" by 
Anthony Trongone from the [EMAIL PROTECTED] Magazine. I am having difficulty 
understanding how to program this. The system doesn't buy if the 
ExRem lines are entered. If the ExRem lines are taken out the system 
will show the buy arrows for every minute on the chart even when the 
buy is not true. The system will never sell. Any direction would be 
appreciated. Has anyone tried to program this system from the 
magazine? Dan

Test1b = (SelectedValue(TimeNum()) > 103500) AND (SelectedValue
(TimeNum()) < 145500);
Test2b = SelectedValue(Opening_Price < C);
Test3b = PriceRange > .22;
Test4b = SelectedValue(C) > Buy_Price;

Test1s = (SelectedValue(TimeNum()) > 145500);

Buy = Test1b AND Test2b AND Test3b AND Test4b;
Sell = Test1s;

Buy=ExRem(Buy, Sell);
Sell=ExRem(Sell, Buy);

PlotShapes(IIf(Buy,shapeUpArrow,shapeNone),colorBrightGreen,0);
PlotShapes(IIf(Sell,shapeDownArrow,shapeNone),colorRed,0);