Is it possible to add to an XML file with the Read/Modify XML file action? I am struggling to see how to do this.

I would like to modify an existing XML file to add another tag such as the example below:

File before addition:

<MetaData>
<MetaFile filename="fred_properties.xml" enabled="true">
File containing properties for fred.
</MetaFile>
<MetaFile filename="bill_properties.xml" enabled="true">
File containing properties for bill.
</MetaFile>
</MetaData>

File after addition:

<MetaData>
<MetaFile filename="fred_properties.xml" enabled="true">
File containing properties for fred.
</MetaFile>
<MetaFile filename="bill_properties.xml" enabled="true">
File containing properties for bill.
</MetaFile>
<MetaFile filename="dave_properties.xml" enabled="true">
File containing properties for dave.
</MetaFile>
</MetaData>

Essentially we have added a new section for dave.