[amibroker] stock price at time of buy signal

["cdepuy" <cdepuy@xxxxxxxxx>]

Can anyone tell me what is the difference between these two?  I'm
tracing and i'm getting different results for different stocks.  Thank
you!

PriceAtBuySignal = ValueWhen (Buy==1,Close);
_TRACE("PriceAtBuySignal "+PriceAtBuySignal);

PriceAtBuySignal = LastValue (BuyPrice);
_TRACE("PriceAtBuySignal "+PriceAtBuySignal);