[Paraview] Sparse Cell Data in a 3DCoRectMesh

[Rovinelli, Andrea]

Hello,
I have a set of sparse cell data that i want to visualize as cells.
the idea is :
1 create a 3d corectangular grid
2 create a subset grid
3 assign attributes to the new subset
I want to select the cells that contain data utilizing a subset of grid. Utilizing the xdmf website wrote this peace of code

<?xml version="1.0"?>
<!DOCTYPE Xdmf SYSTEM "Xdmf.dtd"[]>
<Xdmf>
 <Domain>
 	<Grid Name="hole domain" GridType="Uniform">
    		<Topology TopologyType="3DCoRectMesh" Dimensions="2  2  3"></Topology>
    		<Geometry Type="Origin_DxDyDz">
      			<!-- Origin -->
      			<DataItem Dimensions="3" NumberType="Float" Format="XML">0 0 0</DataItem>
      			<!-- DxDyDz (Spacing/Resolution)-->
      			<DataItem Dimensions="3" NumberType="Float" Format="XML">1 1 1</DataItem>
    		</Geometry>
	</Grid>

    <Grid Name="Portion" GridType="Subset" Section="DataItem">
	<!-- Select 2 cells from another grid. Which 2 are defined by the DataItem -->
        <DataItem 
            DataType="Int"
            Dimensions="2"
            Format="XML">
            0 2
        </DataItem>

        <Grid Name="Target" Reference="XML">
            /Xdmf/Domain/Grid/Grid[@Name="hole domain"]
        </Grid>
        <Attribute Name="New Values" Center="Cell">
            <DataItem Format="XML" Dimensions="2">
            100 150
            </DataItem>
        </Attribute>

    </Grid>

</Domain>
</Xdmf>

Unfortunately wasn’t able to make it work

Any Idea and/or help would be appreciated

Thanks
Andrea Rovinelli