Multi tool use

DataTable and PDFMake

i want to add some data in div when exporting using datatable pdf button.
How to add div when exporting to pdf?
and i want to ask why my first row header doest show up when i export it

this is my script for datatable

$(document).ready(function() {
$('#globaldatatable').DataTable({
scrollX: '100%',
scrollY: 400,
iDisplayLength: '100',
ordering: false,
bPaginate: false,
sDom: '<"row"<"col-sm-6"B><"col-sm-6">>' + '<"row"<"col-sm-12"<"table-responsive"t>>>' + '<"row"<"col-sm-5"><"col-sm-7">>',
buttons: {
buttons: [
{ extend: 'pdfHtml5',
text: '<i class="fa fa-file-pdf-o"></i> PDF',
className: 'excelButton',
orientation: 'landscape',
title: 'Laporan Detail Karyawan',
pageSize: 'A4'
},
{ extend: 'excelHtml5',
text: '<i class="fa fa-file-excel-o"></i> EXCEL',
className: 'excelButton',
title: 'Laporan Detail Karyawan',
message: $('#printed').text()
}],
dom: {
container: {
className: 'dt-buttons'
},
button: {
className: 'btn btn-default'
}
}
},
"columnDefs": [ { "width": "5%", "targets": 0 } ]
});
});


this is my thead and the first row in here doest show up when i export it.

<thead>
<tr>
<th colspan="3">
<th colspan="2" style="text-align: center;">Saldo Awal</th>
<th colspan="2" style="text-align: center;">Terima</th>
<th>Rata</th>
<th colspan="2" style="text-align: center;">Keluar</th>
<th colspan="2" style="text-align: center;">Saldo Akhir</th>
</tr>
<tr>
<th>Kode Brg</th>
<th>Nama Brg</th>
<th>Satuan</th>
<th>Qty</th>
<th>Nominal</th>
<th>Qty</th>
<th>Nominal</th>
<th>Rata</th>
<th>Qty</th>
<th>Nominal</th>
<th>Qty</th>
<th>Nominal</th>
</tr>
</thead>


this one doest show up when i print it

<tr>
<th colspan="3">
<th colspan="2" style="text-align: center;">Saldo Awal</th>
<th colspan="2" style="text-align: center;">Terima</th>
<th>Rata</th>
<th colspan="2" style="text-align: center;">Keluar</th>
<th colspan="2" style="text-align: center;">Saldo Akhir</th>
</tr>


please helpp

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