value keeps changing every tick

Hope you can help the following code is suppossed to look at the previous 2 bars and compare bar current -2 and bar current -1 and provide values accordingly. But the value change on every tick??

can someone lookat the code and help me to change this as the values should only change on the openening of a new bar ie the comparrision between the two previous bars will then change


thank you

double spd1,spd2,v1,v2;
int limit,vcs;
int counted_bars=IndicatorCounted();
//---- last counted bar will be recounted
if(counted_bars>0) counted_bars--;
limit=50; //Bars-counted_bars;
for(int i=limit; i>=0; i--)
{
spd1 = High[i+1] - Low[i+1];
spd2 = High[i+2] - Low[i+2];

R[i]=0; D[i]=0; S[i]=0; W[i]=0;

v1=iVolume(NULL,0,i+1);
v2=iVolume(NULL,0,i+2);

if ( spd1 > spd2 )
{
if ( v1 < v2 )
{
if ( High[i+1]-Close[i+1] < Close[i+1]-Low[i+1] )
{
vcs=1; Print(vcs);
}
if ( High[i+1]-Close[i+1] > Close[i+1]-Low[i+1] )
{
vcs=2; Print(vcs,);
}
}
if ( v1 > v2 )
{
if ( High[i+1]-Close[i+1] < Close[i+1]-Low[i+1] )
{
vcs=1; Print(vcs);
}
if ( High[i+1]-Close[i+1] > Close[i+1]-Low[i+1] )
{
vcs=-1; Print(vcs,);
}
}
}

if ( spd1 < spd2 )

if ( v1 > v2 )
{
vcs=3; Print(vcs);


}


}
return(vcs);
}

see post 4 :
http://www.forexfactory.com/showthread.php?t=239698
...
for an example on how to do backfill with all bars,
and then just update real time on first tick of new bar.

I think you need the 'prevtime trick' with a static variable

declare a variable called prevtime with static, static will make the variable remember it's value until the next tick each time.

So it'll be something like this

static prevtime;


if(prevtime!=Time[0])
{ //it's a new candle}