Indicateur Laguerre avec ALerte

bonjour, j'ai un indicateur laguerre avec une alerte mais celui ci n'attends pas la cloture de la bougie pour donner son alerte. Quelqu'un saurait-il modifier le code pour ne le faire sonner que lorsque la bougie est terminé ??? merci

//+------------------------------------------------------------------+
//| LaguerreALERTE.mq4 |
//+------------------------------------------------------------------+



#property indicator_separate_window
#property indicator_minimum -0.1
#property indicator_maximum 1.1
#property indicator_color1 DodgerBlue
#property indicator_width1 3
#property indicator_level2 0.85
#property indicator_level3 0.45
#property indicator_level4 0.15

//---- input parameters
extern double gamma=0.55;
extern int CountBars=9500;
extern double BuyLevel=0.15;
extern double SellLevel=0.85;
extern bool UseAlertSound=true;
datetime TimeStamp;

double L0 = 0;
double L1 = 0;
double L2 = 0;
double L3 = 0;
double L0A = 0;
double L1A = 0;
double L2A = 0;
double L3A = 0;
double LRSI = 0;
double CU = 0;
double CD = 0;

double val1[],
ValBar1=0;
double alertBar;
double prev;

//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+

int init()
{
//---- indicators
//----
SetIndexBuffer(0,val1);
return(0);
}
//+------------------------------------------------------------------+
//| Custor indicator deinitialization function |
//+------------------------------------------------------------------+
int deinit()
{
//---- TODO: add your code here

//----
return(0);
}
//+------------------------------------------------------------------+
//| Custom indicator iteration function |
//+------------------------------------------------------------------+
int start()
{

if (CountBars>Bars) CountBars=Bars;
SetIndexDrawBegin(0,Bars-CountBars);

int i;
int counted_bars=IndicatorCounted();

i=CountBars-1;

while(i>=0)
{
L0A = L0;
L1A = L1;
L2A = L2;
L3A = L3;
L0 = (1 - gamma)*Close[i] + gamma*L0A;
L1 = - gamma *L0 + L0A + gamma *L1A;
L2 = - gamma *L1 + L1A + gamma *L2A;
L3 = - gamma *L2 + L2A + gamma *L3A;

CU = 0;
CD = 0;

if (L0 >= L1) CU = L0 - L1; else CD = L1 - L0;
if (L1 >= L2) CU = CU + L1 - L2; else CD = CD + L2 - L1;
if (L2 >= L3) CU = CU + L2 - L3; else CD = CD + L3 - L2;

if (CU + CD != 0) LRSI = CU / (CU + CD);
val1[i] = LRSI;

if(i==1) ValBar1=LRSI;
if(prev != 1 && i==0 && ValBar1>SellLevel && LRSI<=SellLevel && Bars>alertBar)
{
Alert("Lagerre Sell "+ Symbol()+" Curr: ", LRSI," on ",Period());
alertBar = Bars;prev = 2;
}

if(prev != 2 && i==0 && ValBar1<BuyLevel && LRSI>=BuyLevel && Bars>alertBar)
{
Alert("Lagerre Buy "+ Symbol()+" Curr: ", LRSI," On ",Period());
alertBar = Bars;prev = 1;
}

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

Comment utilise-t-on cet indicateur ?