Java Database Connectivity (JDBC)

Hey folks,

I am trying to do the following on a MySQL 5 DB to select entities beginning with a certain number.

psSelectRegex =connection.prepareStatement(
					"SELECT * FROM artikel where artikel_nr regexp '^?' ORDER BY artikel_nr LIMIT 0,25"
			);
psSelectRegex.setString(1,iartikel_nr);
psSelectRegex.executeQuery();

As an unprepared Statement in the following form it works perfectly.

"SELECT * FROM artikel where artikel_nr regexp '^" + iartikel_nr + "' ORDER BY artikel_nr LIMIT 0,25"

The error i get is: Parameter index out of range (1 > number of parameters, which is 0).

How do i solve this to use the regexp??

Thanks in advance

Best regards

Oliver