How to fetch values from a csv file based on line number and column name as input

I'm new to Neoload - my Scenario is
1) Get an API response and write a specific value into a text file append with "|" value. - Done
2) Read the file and extract value based on Line number and Column values in script - Not successful

• I able to create a file variable and reading the number of lines from the text file.
3) How to use "reader.readAsText(fileName);" in neoload script , What is the package I need to add in my code. I'm using neoload latest version 6.5.1

Please help me how to achieve that.

Code I'm trying

var fileName = "C:\\TestResult\\LoadTest\\XXX.txt";

//Read File and get line count
var reader = new Packages.java.io.LineNumberReader(new Packages.java.io.FileReader(fileName));
while ((reader.readLine()) != null) {
var line = reader.getLineNumber();

}
var lineCount = reader.getLineNumber();
reader.close();
logger.debug("Line number is = "+lineCount);
context.variableManager.setValue("LoopCount",lineCount);

var check = context.variableManager.getValue("logFileRead");

var i;
for(i=0 ; i < lineCount;i++){
logger.debug("Line number loop = "+lineCount);
// Is that possible to extract the file varibale here with columnname_line number ????

}