<div>That&#39;s the example I give you below my answer. </div>
<div>I repeat it          -----------------&gt;</div>
<div> </div>
<div>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">
<div>&lt;?xml version=&quot;1.0&quot;?&gt; 
<div>&lt;VTKFile type=&quot;vtkMultiBlockDataSet&quot; version=&quot;1.0&quot; byte_order=&quot;LittleEndian&quot; compressor=&quot;vtkZLibDataCompressor&quot;&gt;</div>
<blockquote dir="ltr" style="MARGIN-RIGHT: 0px">
<div>&lt;vtkMultiBlockDataSet&gt;</div>
<blockquote dir="ltr" style="MARGIN-RIGHT: 0px">
<div>&lt;DataSet index=&quot;1&quot; file=&quot;bloc1_test.vts&quot;/&gt;</div>
<div>&lt;DataSet index=&quot;2&quot; file=&quot;bloc2_test.vts&quot;/&gt;</div>
<div>&lt;DataSet index=&quot;3&quot; file=&quot;bloc3_test.vts&quot;/&gt;</div>
<div>&lt;DataSet index=&quot;4&quot; file=&quot;bloc4_test.vts&quot;/&gt;</div>
<div>&lt;DataSet index=&quot;5&quot; file=&quot;bloc5_test.vts&quot;/&gt;</div>
<div>&lt;DataSet index=&quot;6&quot; file=&quot;bloc6_test.vts&quot;/&gt;</div>
<div>&lt;DataSet index=&quot;7&quot; file=&quot;bloc7_test.vts&quot;/&gt;</div>
<div>&lt;DataSet index=&quot;8&quot; file=&quot;bloc8_test.vts&quot;/&gt;</div>
<div>&lt;DataSet index=&quot;9&quot; file=&quot;bloc9_test.vts&quot;/&gt;</div>
<div>&lt;DataSet index=&quot;10&quot; file=&quot;bloc10_test.vts&quot;/&gt;</div>
<div>&lt;DataSet index=&quot;11&quot; file=&quot;bloc11_test.vts&quot;/&gt;</div>
<div>&lt;DataSet index=&quot;12&quot; file=&quot;bloc12_test.vts&quot;/&gt;</div>
<div>&lt;DataSet index=&quot;13&quot; file=&quot;bloc13_test.vts&quot;/&gt;</div>
<div>&lt;DataSet index=&quot;14&quot; file=&quot;bloc14_test.vts&quot;/&gt;</div>
<div>&lt;DataSet index=&quot;15&quot; file=&quot;bloc15_test.vts&quot;/&gt;</div>
<div>&lt;DataSet index=&quot;16&quot; file=&quot;bloc16_test.vts&quot;/&gt;</div>
<div>&lt;DataSet index=&quot;17&quot; file=&quot;bloc17_test.vts&quot;/&gt;</div>
<div>&lt;DataSet index=&quot;18&quot; file=&quot;bloc18_test.vts&quot;/&gt;</div>
<div>&lt;DataSet index=&quot;19&quot; file=&quot;bloc19_test.vts&quot;/&gt;</div>
<div>&lt;DataSet index=&quot;20&quot; file=&quot;bloc20_test.vts&quot;/&gt;</div>
<div>&lt;DataSet index=&quot;21&quot; file=&quot;bloc21_test.vts&quot;/&gt;</div>
<div>&lt;DataSet index=&quot;22&quot; file=&quot;bloc22_test.vts&quot;/&gt;</div>
<div>&lt;DataSet index=&quot;23&quot; file=&quot;bloc23_test.vts&quot;/&gt;</div>
<div>&lt;DataSet index=&quot;24&quot; file=&quot;bloc24_test.vts&quot;/&gt;</div>
<div>&lt;DataSet index=&quot;25&quot; file=&quot;bloc25_test.vts&quot;/&gt;</div></blockquote>
<div>&lt;/vtkMultiBlockDataSet&gt;</div></blockquote>
<div>&lt;/VTKFile&gt;</div></div></blockquote></div>