Run time error when using ACD driver to access an Excel File (Office2007 installed )

 Why Microsoft Jscript runtime error thrown?

The excel file is pretty standard..No clue...





/////////////////////////////////Code as below///////////////////////////////////////////////////////


var RecNo;

  

// Posts data to the log (helper routine) 

function ProcessData()

{

  var Fldr, i;

  

  Fldr = Log["CreateFolder"]("Record: " + aqConvert.VarToStr(RecNo));

  Log["PushLogFolder"](Fldr);

  

 // if (! (DDT["CurrentDriver"]["Exists"]) )

  //  Log["Warning"]("MS Word is closed"); 

  

  for(i = 0; i < DDT["CurrentDriver"]["ColumnCount"]; i++) //This line throw exception, but why>?

    Log.Message("helloworld"); 

    Log.Message(DDT["CurrentDriver"]["ColumnName"](i) + ": " + aqConvert.VarToStr(DDT["CurrentDriver"]["Value"](i)));

  

  Log["PopLogFolder"](); 

  RecNo = RecNo + 1; 

}

  

// Creates the driver (main routine) 

function TestDriver()

{

  var Driver;

  

  // Creates the driver 

  // If you connect to an Excel 2007 sheet, use the following method call: 

  // Driver = DDT["ExcelDriver"]("C:\\MyFile.xls", "Sheet1", true); 

  Driver = DDT["ExcelDriver"]("C:\\MyFile.xls", "Sheet2"); 

  

  // Iterates through records 

  RecNo = 0;

  while (! Driver["EOF"]() ) 

  {

    ProcessData(); // Processes data 

    Driver["Next"](); // Goes to the next record 

  }

  

  // Closing the driver 

  DDT["CloseDriver"](Driver["Name"]);

}