Enter a query in a default value expression

[ostlund.joel]

In Jasperreports I would like to enter a Default Value Expression to a Parameter as a Query string to be able to dynamically provide the user with a default value that is correct, but not force him to choose it.

Is there anyway?

I guess the result should look something like this (even though it doesn't work, I only use this for clarification):

http://i.stack.imgur.com/USZ9z.png

I am using this for a form with a single-value selection method (the user can write which ever number he/she wants but I want the default value to be selected from the database).