Formula Validation - How to provide a value which contains a comma

Question

I am trying to create an Excel Workbook using excel4node in Node JS

const workbook = new excel.Workbook();
  const sheet = workbook.addWorksheet();
  sheet.cell(1, 1).string("title");
  sheet.cell(1, 2).string("description");
  sheet.cell(1, 5).string("option1");
  sheet.cell(1, 6).string("option2");

  ["E", "F"].forEach((col) => {
    sheet.addDataValidation({
      type: "list",
      allowBlank: true,
      prompt: "Choose from dropdown",
      error: "Invalid choice was chosen",
      showDropDown: true,
      sqref: `${col}2:${col}2000`,
      formulas: [
        "P20 - Attend workshops ABCs, and Lessons learned sessions",
        "P40 - Facilitate workshops, ABC, and lessons learned sessions",
      ],
    });
  });
  return workbook

The problem is when I download and open the Excel file instead of 2 options in Row E3 I see multiple options like

P20 - Attend workshops ABCs
and Lessons learned sessions
P40 - Facilitate workshops
ABC
and lessons learned sessions

I read online and it seems one solution is to use Named Range. However, I could not figure out how to use Named Range in excel4Node or if there is any other solution that I can try