Does anyone know if there is a way to modify a text written in drawtext with the pdf-lib library or another library that I can use in script apps?

I wrote this code:

setTimeout = (func, sleep) => (Utilities.sleep(sleep),func())
async function modifyPdf() {
  //async
  const pdfData = new Uint8Array(DriveApp.getFileById("1Zy4Fbq__ubjX0NLs7J5WPGj7JlV_8-KJ").getBlob().getBytes());
 
  const { PDFDocument, StandardFonts, PDFName, PDFRawStream, decodePDFRawStream, arrayAsString, rgb, degrees} = PDFLib;

  const pdfDoc = await PDFDocument.load(pdfData);
  const helveticaFont = await pdfDoc.embedFont(StandardFonts.Helvetica);

  const pages = pdfDoc.getPages();
  const firstPage = pages[0];
  const { width, height } = firstPage.getSize();
  //firstPage.drawText(`This text was added with JavaScriptnn${' '.repeat(10)}(Google Apps script)!`, {
 firstPage.drawText(`This text was added with JavaScript`, {
    x: 10,
    y: height - 10,
    size: 20,
    font: helveticaFont,
    color: rgb(0.95, 0.1, 0.1)
    //rotate: degrees(20),
    //opacity: 0.5,
  });

  const pdfBytes = await pdfDoc.save();
  Drive.Files.update(
    {
      title: "newpdf from apps script v22",
      mimeType: "application/pdf"
    },
    "1Zy4Fbq__ubjX0NLs7J5WPGj7JlV_8-KJ",
    Utilities.newBlob(pdfBytes)
  )

the problem is that if I run it the first time it will write on the PDF “this text was added…” but if I run it a second time, it will write over it… I would like to be able to change the text so Should we be able to ensure that it replaces it?

Is there a way via this library or another, or another way to achieve this?

for the moment it overlaps every time