Evaluating a GString

Hi,

I'm trying to find out if there's any shorter way to evaluate a GString from Java code. The string to be evaluated comes from an XML configuration file and includes placeholders. My solution seems rather complex for such a basic need, and I'm quite sure there are situations where it doesn't work properly :

Binding binding = new Binding();
...
String evaluatedRegex = "\""+ org.apache.commons.lang.StringEscapeUtils.escapeJava(regex)+"\"";
evaluatedRegex = new GroovyShell(binding).evaluate(evaluatedRegex).toString();

I'd like to be able to write something like :

String evaluatedRegex = new GString(regex, binding).toString();

Or (cleaner) :

String evaluatedRegex = GStringFactory.evaluate(regex, binding);

Thanks