read vtu as input file

first of all, i using VTU file as input file in MATLAB.

some input file succeeded to read. but i am wondering that i did not get any information from input file

because in DataAary only write as below

the input file (pressure and temperature) should fill in number not char

</PointData>

<CellData>

<DataArray type="Float64" Name="pressure" format="binary" RangeMin="50" RangeMax="80">

AQAAAACAAADIAAAAEwAAAA==eJxjYAABTwcGqtIhdKcBP1cOBw==

</DataArray>

<DataArray type="Float64" Name="temperature" format="binary" RangeMin="200" RangeMax="380">

AQAAAACAAADIAAAAFQAAAA==eJxjYACBTAeGgaAPlFONBgCFmxiO

</DataArray>

is there anyone face my problem?

i used

A = importdata(filename,delimiterIn,headerlinesIn);