[amibroker] intraday backtesting

["Vins" <mrpurple@xxxxxxxx>]

i'm tryng to let close intraday position some minutes before market 
close, and opening the day after only when a new signal's come.

here the code :

x= HHV(TimeNum() ,500)-100;
Tempo3=IIf(TimeNum()>=x,0,1);

Buy=buycond;
Sell=sellcond;
Short=shortcond; 
Cover=covercond;
// CLOSE AT END OF MARKET TIME
Cover=TimeNum() > x;
Sell=TimeNum() > x; //is working but after backtest i got double arrows

Now the problem is when the day openi is taking a new trade thinking 
that the signal of the last day is still good and is buyng at the 
minimum of the candles or selling from the top .. How i can say to 
enter only when a new signal is done ... ??