Using scriptlets for fckeditor content

Hello,
I set-up the fckeditor sucessfully, but I need to use a value that is in a java variable with the fckeditor

When I do this:

<FCK:editor instanceName="EditorDefault">
<jsp:attribute name="value">some text</jsp:attribute>
</FCK:editor>

It works fine, but When I do this:

<FCK:editor instanceName="EditorDefault">
<jsp:attribute name="value"><%=java_variable%></jsp:attribute>
</FCK:editor>

The application broke

How can I use the editor with java variables?
Thank You