What am I doing wrong?

Hi there I posted an earlier version of this but managed to get ahold of the problem.. but not I have another one ha ha. I have written this code to write data to a csv file. but each time the chart recieves new data it creates a new csv file and wipes out my old stored data , is there a way that this code can just open the file and edit it without having to wipe out everything and create a new file each time? All the code relating the writing to the file I have written in orange... Can someone also please sudjest how I can get it to update the file its writing to each time it gets new data through metatrader would be awesom !

Thanks alot!


#property copyright "Xlr8er"
#property link ""
#property indicator_chart_window
#property indicator_buffers 2
#property indicator_color1 Yellow
#property indicator_color2 Red
//---- input parameters
extern int CountBars=400;
extern int SSP=7;
extern double Kmin=1.6;
extern double Kmax=50.6;
extern bool gAlert=True; // Switch to allow alerts
string FIVE = "0";
//---- buffers
double ExtMapBuffer1[];
double ExtMapBuffer2[];
bool gSellAlertGiven=false; // Used to stop constant alerts
bool gBuyAlertGiven=false; // Used to stop constant alerts
//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
int init()
{
//---- indicators
IndicatorBuffers(2);
SetIndexStyle(0,DRAW_LINE,0,1,DarkOrange);
SetIndexBuffer(0,ExtMapBuffer1);
SetIndexStyle(1,DRAW_LINE,0,1,Red);
SetIndexBuffer(1,ExtMapBuffer2);

return(0);
}
//+------------------------------------------------------------------+
//| Custor indicator deinitialization function |
//+------------------------------------------------------------------+
int deinit()
{
return(0);

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


int handle;
datetime orderOpen=OrderOpenTime();
handle=FileOpen("EURUSD5", FILE_CSV|FILE_WRITE, ';');



int value = 0 ;



int i,
i2,
loopbegin,
counted_bars=IndicatorCounted();

double SsMax,
SsMin,
K,
val1,
val2,
smin,
smax,
price;

if (CountBars>=Bars){
CountBars=Bars;
}

SetIndexDrawBegin(0,Bars-CountBars+SSP);
SetIndexDrawBegin(1,Bars-CountBars+SSP);

if(Bars<=SSP+1){
return(0);
}

if(Bars<=SSP+1){
return(0);
}

//---- initial zero

if(counted_bars<SSP+1){
for(i=1;i<=SSP;i++) ExtMapBuffer1[CountBars-i]=0.0;
for(i=1;i<=SSP;i++) ExtMapBuffer2[CountBars-i]=0.0;
}

//+++++++-SSP
for(i=CountBars-SSP;i>=0;i--) {
SsMax = High[Highest(NULL,0,MODE_HIGH,SSP,i-SSP+1)];
SsMin = Low[Lowest(NULL,0,MODE_LOW,SSP,i-SSP+1)];
smin = SsMin-(SsMax-SsMin)*Kmin/100;
smax = SsMax-(SsMax-SsMin)*Kmax/100;
ExtMapBuffer1[i-SSP+6]=smax;
ExtMapBuffer2[i-SSP-1]=smax;
val1 = ExtMapBuffer1[0];
val2 = ExtMapBuffer2[0];

if (val1 > val2){

value = 1;
Comment("buy",val1);
if( gAlert==true && gBuyAlertGiven==false){
PlaySound("alert.wav");
Alert("Buy signal at " + DoubleToStr(val1, 4) + " on " + Period() + " minute chart");
gBuyAlertGiven=true;
gSellAlertGiven=false;
FIVE = "1";


if(handle>0)
{
FileWrite(handle, StrToInteger(FIVE));
FileClose(handle);
}





}
}
if (val1 < val2){

value = 2;
Comment("sell",val2);
if(gAlert==true && gSellAlertGiven==false){
PlaySound("alert.wav");
Alert("Sell signal at " + DoubleToStr(val2, 4) + " on " + Period()+ " minute chart");
gBuyAlertGiven=false;
gSellAlertGiven=true;
FIVE = "2";


if(handle>0)
{
FileWrite(handle, StrToInteger(FIVE));
FileClose(handle);
}
}
}
}






return(0);
}

You need to add FileSeek

FileSeek(handle, 0, SEEK_END);