Profit target and Stop loss alert

Hello,
Please help in editing code.
Needs to activate the acoustic / optical warning only once.
The code below works, unfortunately, when equity reaches the set Risk %, so the function PlaySound and Alert is activated when each tick, which do not.
I will be glad for any help. Please help me
I try for two weeks without result.Already I can not think of anything.
code:

extern bool Percent = true;
extern double Risk = 2.0;

int start()
{
//----
if (Percent == true)

double stop =AccountBalance()*(-Risk)/100;
double profit =AccountBalance()*(Risk)/100;
double floating_profit =AccountProfit();

{
if(StrToDouble(floating_profit) <= stop)

{
PlaySound("alert.wav");

Alert("Warning price: Stopp-loss "+Symbol()+" "+Hour()+":"+Minute()+":"+Seconds());

{
if(StrToDouble(floating_profit) >= profit)

PlaySound("alert.wav");

Alert("Warning price: Profit-target "+Symbol()+" "+Hour()+":"+Minute()+":"+Seconds());

}}}}
return(0);
}

hi,

why using StrToDouble?

//////////////////////

extern bool Percent = true;
extern double Risk = 2.0;


bool SLAlerted=False;
bool TPAlerted=False;
int start()
{
//----
if (Percent == true)

double stop =AccountBalance()*(-Risk)/100;
double profit =AccountBalance()*(Risk)/100;
double floating_profit =AccountProfit();

{
if(StrToDouble(floating_profit) <= stop && SLAlerted==False)

{
PlaySound("alert.wav");

Alert("Warning price: Stopp-loss "+Symbol()+" "+Hour()+":"+Minute()+":"+Seconds() );
SLAlerted = True;
{
if(StrToDouble(floating_profit) >= profit && TPAlerted==False)

PlaySound("alert.wav");

Alert("Warning price: Profit-target "+Symbol()+" "+Hour()+":"+Minute()+":"+Seconds() );
TPAlerted = True;

}}}}
return(0);
}

the modification will prevent the alert to come every tick. but EA need to be to resetted (load/unload) once it give an alert, in order to set SLAlerted and TPAlerted = False; failed to do so, it will simply ignore the next event of price fall below SL or price reach beyond TP on another trade.

hope you can understand what i mean...

stephen

Thank you, I tried to get. Could you send me a mq4 with this?