Hello Saar,
yes you are right, it was the '=' to declare an expression. But then at the end the ';' is forbidden. So the right line must be
NovaDialogBox.createMessageDialogBox("Benachrichtigung", "<%= rule.getMessage() %>", "Ok", 127, 124)}.
So the last Problem is, that the rule.getMessage() returns a String with \n included. The JSP-Interpreter do for this a linebreak, that i dont't want. The \n-characters should be written down to the JS-Script.
BR,
Thomas