[amibroker] Trendline break alert not working

["Kropotkin" <backup_dayad@xxxxxxxxxxxx>]

I use a scan for trendline breaks. I keep the trendlines in the 
standard "price" pane, and give them a "Study ID" of "RE" or "SU". 

Sometimes the scan works. other times it doesn't, even though 
everything appears to be the same. Sometimes if I backtest, one 
trendline (same pane, same stock) will give alerts and the other 
won't. I've checked carefully that it's the right pane ("Price" from 
the built-in indicators, and the Study ID is correct, but I can't find 
what's wrong. 

I hope someone can help! here's my code: 


// start AFL code
BreakSU = Cross( Study( "SU" ), Close );
BreakRE = Cross( Close, Study( "RE" ) );
AlertIf(BreakSU , "sound ", "Break Support");	 
AlertIf(BreakRE, "sound ", "Break Resistance");	 

AddColumn(IIf(BreakRE OR BreakSU,BreakRE - BreakSU,Null) , "Br",1,
colorDefault,IIf(BreakRE ,colorPaleGreen,IIf(BreakSU,colorLightOrange, 
colorDefault))  );
//I added a couple of simpler column commands to see if they made a 
difference - but the results were the same: 
// AddColumn(IIf(BreakRE,BreakRE,Null) , "BrRE",1,colorDefault,
IIf(BreakRE ,colorPaleGreen,colorDefault)  );
// AddColumn(IIf(BreakSU,BreakSU,Null) , "BrSU",1,colorDefault,
IIf(BreakSU ,colorLightOrange,colorDefault)  );


Buy = BreakRE;
Short = BreakSU;
Filter = BreakSU OR BreakRE;  //*/

// end AFL code


Cheers
Chris 
- using Amibroker 4.63.1 beta. (Was using v 4.60.2 - upgraded to 4.60.
4 then to latest beta version, but the problem is still the same)







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