Why is Metatrader always one candle behind?

So, take the following code.

Load it up on a chart of your choosing (except AUDJPY), any pair any time frame (I'd recommend 15min or greater).  Let it run so you at least get a few candles in.  Make sure whatever timeframe you choose, you don't have .hst file for AUDJPY in that timeframe.  ie., AUDJPY15.hst for 15 min.

Once done, remove the EA.  Open the AUDJPY chart on the timeframe.  Open the CSV it creates.  You'll see the first value is 0.  Then all values there after are "one candle behind".

Can anyone explain this, or know of a fix for it?

All the prices should be up one and the 0 not in the table.

//+------------------------------------------------------------------+
//|                                                     Log test.mq4 |
//|                                    Copyright 2014, Nondisclosure |
//|                                               http://no.link.yet |
//+------------------------------------------------------------------+
#property copyright "Copyright 2014, Nondisclosure"
#property link      "http://no.link.yet"
#property version   "1.00"
#property strict


string filename="Log test.csv";
int handle;
datetime LastTime;
//+------------------------------------------------------------------+
//| Expert initialization function                                   |
//+------------------------------------------------------------------+
int OnInit()
  {
   string header="Date/Time,Other Pair";
   LastTime=Time[0];
   handle=FileOpen(filename,FILE_WRITE|FILE_CSV);
   FileWrite(handle,header);
   Comment(" ");
   return(INIT_SUCCEEDED);
  }

//+------------------------------------------------------------------+
//| Expert deinitialization function                                 |
//+------------------------------------------------------------------+
void OnDeinit(const int reason)
  {
//---
   
  }

//+------------------------------------------------------------------+
//| Expert tick function                                             |
//+------------------------------------------------------------------+
void OnTick()
{
   string LineData;
   bool NewBar=funcIsNewBar();
   if(NewBar)
   {
     LineData=StringConcatenate(Time[1],",",iClose("AUDJPY",0,1));
     FileWrite(handle,LineData);      
   }
}

bool funcIsNewBar()
{
   bool ReturnValue=false;
   if(LastTime != Time[0]) 
   {
      ReturnValue=true;
      LastTime=Time[0];   
   }
   return(ReturnValue);
}