How to use Map as dataset element in JasperReports?

I'm passing a parameter to Jasper which is a collection of Maps. I would like to use this collection as dataset for a table.

If I had a collection of normal Java objects I would do:

$F{description}

to get the field. I would like to do something like:

this.get(description)

or

this.values().get(1)

Is it possible to retrieve a map value in a table like this?