besoin d'aide sur un probleme de code sur un indicateur sonore

bonjour à tous
j'ai trouvé un indicateur sympa qui propose d'ouvrir des positions en se basant sur l'adx, le tout avec un signal sonore, mais voilà il y a un problème il bip continuellement.

donc voilà comme je n'y connais rien en codage, je me demandait s'il y avait une bonne ame qui voudrait bien jetter un oeil au code et éventuellement corriger :)

//+------------------------------------------------------------------+
//| ADX Crossing.mq4
//| Amir
//+------------------------------------------------------------------+
#property copyright "Author - Amir"

#property indicator_chart_window
#property indicator_buffers 2
#property indicator_color1 Lime
#property indicator_color2 Red

//---- input parameters
extern int ADXbars=50;
extern int CountBars=350;
extern bool UseSound = True;
extern string SoundFile = "wait.waw";

//---- buffers
double val1[];
double val2[];
double b4plusdi,nowplusdi,b4minusdi,nowminusdi;
bool SoundBuy = False;
bool SoundSell = False;

//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
int init()
{
string short_name;
//---- indicator line
IndicatorBuffers(2);
SetIndexStyle(0,DRAW_ARROW);
SetIndexArrow(0,108);
SetIndexStyle(1,DRAW_ARROW);
SetIndexArrow(1,108);
SetIndexBuffer(0,val1);
SetIndexBuffer(1,val2);
//----
return(0);
}
//+------------------------------------------------------------------+
//| AltrTrend_Signal_v2_2 |
//+------------------------------------------------------------------+
int start()
{
if (CountBars>=Bars) CountBars=Bars;
SetIndexDrawBegin(0,Bars-CountBars);
SetIndexDrawBegin(1,Bars-CountBars);
int i,shift,limit,CountedBars = IndicatorCounted();

if (CountedBars < 1)
{
for (i=0; i<=CountBars; i++) {val1[i] = 0.0; val2[i] = 0.0;}
}

if(CountedBars > 0) CountedBars--;
limit = Bars - CountedBars;

for (shift = limit; shift>=0; shift--)
{
b4plusdi=iADX(NULL,0,ADXbars,PRICE_CLOSE,MODE_PLUSDI,shift+1);
nowplusdi=iADX(NULL,0,ADXbars,PRICE_CLOSE,MODE_PLUSDI,shift);
b4minusdi=iADX(NULL,0,ADXbars,PRICE_CLOSE,MODE_MINUSDI,shift+1);
nowminusdi=iADX(NULL,0,ADXbars,PRICE_CLOSE,MODE_MINUSDI,shift);
if (b4plusdi<b4minusdi && nowplusdi>nowminusdi)
{
val1[shift]=Low[shift]-5*Point;
}
if (b4plusdi>b4minusdi && nowplusdi<nowminusdi)
{
val2[shift]=High[shift]+5*Point;
}


}
if (val1[0] != EMPTY_VALUE && val1[0] != 0 && SoundBuy)
{
SoundBuy = False;
if (UseSound) PlaySound (SoundFile);
}
if (!SoundBuy && (val1[0] == EMPTY_VALUE || val1[0] == 0)) SoundBuy = True;

if (val2[0] != EMPTY_VALUE && val2[0] != 0 && SoundSell)
{
SoundSell = False;
if (UseSound) PlaySound (SoundFile);
}
if (!SoundSell && (val2[0] == EMPTY_VALUE || val2[0] == 0)) SoundSell = True;

return(0);
}
//+------------------------------------------------------------------+