Hierarchic XML with Crystal Reports 8.5

[mbuckhurst]

I've just started using Crystal Reports and I've got to produce a report based on the following structure of XML:

<cat>cat1
<cat>cat2
<data>data values</data>
</cat>
<cat>cat3
<cat>cat4a
<data>some data values</data>
</cat>
<cat>cat4b
<data>some more data values</data>
</cat>
</cat>
</cat>

The data is generated at runtime and there is no limit to the number of hierarchies of cat objects and data, nor to the depth the hierarchy goes. As far as I can tell Crystal Reports can only deal with fixed depths, is this true? or has someone already managed to do a similar report?

thanks
mike