Processing value of decorator:getProperty in JSP-scriplet

Hi

Having read the thread "Thread: Removing meta tags from source" I am a bit confused. Isn't it possible to use the value of at meta-tag submitted by the to be decorated page in a JSP-decorator for processing? If yes: how do I do this using JSP-technology?

E.g.
# I get an ASP page foo.asp (-> being an externalIy developed webpage, I cannot use the technique to programmatically set something in the request as suggested in another with setAttribute(..))
# In foo.asp there is a meta-tag: <meta name="rightbox" content="true" />
# In my jsp-decorator could retrieve the value of the meta-tag with: <decorator:getProperty property="meta.rightbox" default="false" />
# I want to assign the value of the metatag to a variable in a JSP-scriplet like this (i.e. using the value for processing, not directly for output):
<%
boolean foo;
foo = Boolean.parseBoolean(<decorator:getProperty property="meta.rightbox" default="false" />);
if (foo) {
	out.println("Hello");
}
%>

This fails (of course). But isn't there another way to do an assignment?

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