jsPDF-AutoTable footer

[tqmd1]

Sir I am using these codes

function generate() {

  var doc = new jsPDF('p', 'pt');
  doc.setFontSize(18);
    doc.text('Chart of Accounts', 220, 50);
//	doc.text(document.getElementById("rptname").value, 220, 50);
    doc.setFontSize(8);
    doc.setTextColor(100);
		
  var res = doc.autoTableHtmlToJson(document.getElementById("mytable"));
     
	doc.autoTable(res.columns, res.data, {margin: {top: 70}});

    doc.save("chartofaccounts.pdf");
}

Now I want to use page number and number of pages in footer.

Here is link of jsPDF-AutoTable
https://simonbengtsson.github.io/jsPDF-AutoTable/#header-footer

but I could not understand how to adjust these codes in above codes

// Header and footers - shows how header and footers can be drawn
examples['header-footer'] = function () {
    var doc = new jsPDF();
    var totalPagesExp = "{total_pages_count_string}";

    var pageContent = function (data) {
        // HEADER
        doc.setFontSize(20);
        doc.setTextColor(40);
        doc.setFontStyle('normal');
        if (base64Img) {
            doc.addImage(base64Img, 'JPEG', data.settings.margin.left, 15, 10, 10);
        }
        doc.text("Report", data.settings.margin.left + 15, 22);

        // FOOTER
        var str = "Page " + data.pageCount;
        // Total page number plugin only available in jspdf v1.0+
        if (typeof doc.putTotalPages === 'function') {
            str = str + " of " + totalPagesExp;
        }
        doc.setFontSize(10);
        doc.text(str, data.settings.margin.left, doc.internal.pageSize.height - 10);
    };

    doc.autoTable(getColumns(), getData(40), {
        addPageContent: pageContent,
        margin: {top: 30}
    });

    // Total page number plugin only available in jspdf v1.0+
    if (typeof doc.putTotalPages === 'function') {
        doc.putTotalPages(totalPagesExp);
    }

    return doc;
};

Or is there any other way to show page number?

Please help