Import Data from tab-delimited text file and update Document Properties

I am working on an automation involving multiple PDFs placed in a foler. Using ActionWizard and Execute JavaScript option, I am trying to update the metadata like subject and Keywords from spreadsheet.

Spreadsheet is converted to Tab-delimited text file.

Column A      Column B     Column C

PDF_Name    Subject         Keywords

PDF1              Subject1       Keywords1

PDF2              Subject2      Keywords2

.....

I want the code to Compare the PDF name with column A and update the same PDF subject and keywords respective to the same row.

I have built the below code so far but i am not sure where is the mistake. When i run the code, nothing happends. Please help.

// Get the current PDF file name

var currentPDFName = this.document.fileName;

// Path to the tab-delimited data file

var dataFilePath = "/path/to/your/tab-delimited/data.txt";

var dataFile = util.readFileIntoStream(dataFilePath);

// Read the data file and update information

var line;

while ((line = util.readLine(dataFile)) !== null) {

    var values = line.split('\t');

    var pdfName = values[0];

    var subject = values[1];

    var keywords = values[2];    

    if (pdfName === currentPDFName) {

this.info.Subject = subject;

this.info.Keywords = keywords;

        break; // Assuming each PDF name is unique in the data

    }

}

dataFile.close();