Sending Alert Mail Only Once

hi folks,
how can i define that an alert email (when trend line is broken) will be sent only once, not with every tick?


(found this one here in the forum


int start()
{
int counted_bars=IndicatorCounted();
ObjectCreate(TLineName, OBJ_TREND, 0, Time[25], Bid, Time[0], Ask);
ObjectSet(TLineName, OBJPROP_STYLE, LineStyle);
ObjectSet(TLineName, OBJPROP_COLOR, LineColor);
ObjectSet(TLineName, OBJPROP_WIDTH, LineWidth);
double val=ObjectGetValueByShift(TLineName, 0);
if (Bid-AlertPipRange*Point <= val && Bid+AlertPipRange*Point >= val)SendMail("- " + Symbol() + " -","-");

return(0);
}




thx!

Declare a global var...
bool mMailSent = false;

int start()
{
int counted_bars=IndicatorCounted();
ObjectCreate(TLineName, OBJ_TREND, 0, Time[25], Bid, Time[0], Ask);
ObjectSet(TLineName, OBJPROP_STYLE, LineStyle);
ObjectSet(TLineName, OBJPROP_COLOR, LineColor);
ObjectSet(TLineName, OBJPROP_WIDTH, LineWidth);
double val=ObjectGetValueByShift(TLineName , 0);
if (!mMailSent && Bid-AlertPipRange*Point <= val && Bid+AlertPipRange*Point >= val)
{
SendMail("- " + Symbol() + " -","-");
mMailSent = true;
}
return(0);
}



Depending on what you are doing you will need to reset to false before it will generate another signal.

HTH

M.

thank you!