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JSTL - why can't I set param property?

 
Ron Newman
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I'm just starting to learn JSTL and the Expression Language.
My JSP looks like this:

When I run it, I get:
org.apache.jasper.JasperException: Invalid property in <set>: "b"
Since "param" exists by default and is a Map, why can't I set a property in it?
[ July 10, 2003: Message edited by: Ron Newman ]
[ July 10, 2003: Message edited by: Ron Newman ]
 
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