Generic id attribute in jsp:useBean

hi!
i use JSP 1.2 and would like to fill the id-attribute with a constant that i have declared in an interface. I import this interface into my jsp and then write
<jsp:useBean id='%= Constants.REQ_ATTRIB_ARTICLEBEAN %'
class="com.my.content.ArticleBean" scope="request"/>FAILURE: "JspTranslate: Runtime Expr Value
"%=Constants.REQ_ATTRIB_ARTICLEBEAN %" is not permitted for attribute
"id" for jsp element jsp:useBean."
I tried also the following, but it didn't work either...
<jsp:useBean class="com.my.content.ArticleBean" scope="request">
<jsp:attribute name="id">
<%= Constants.REQ_ATTRIB_ARTICLEBEAN %>
</jsp:attribute>
</jsp:useBean>FAILURE: "JspTranslate: jsp:useBean is missing an id attribute."
Thanks for the help!

Isnt the error message succint enough ?
FAILURE: "JspTranslate: Runtime Expr Value
"%=Constants.REQ_ATTRIB_ARTICLEBEAN %" is not permitted for attribute
"id" for jsp element jsp:useBean."IMO, you cannot use Runtime expressions for the id attribute values.
cheers,
ram.

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I am really sorry for the inconvenience.I wrongly mentioned name in place of id vice versa.
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