Why Spring MVC does not display the ${value} on the JSP page

I faced a very dumb problem, I understood it was not a coding problem and that's why it was so hard to solve. I used Spring MVC 3.1 and jsp to display the ${value}. When I got the JSP page, the ${value} did not display anything except "${value}". After few hours of google.....I got the following site which discribes why JSP page did not display the value.

http://www.mkyong.com/spring-mvc/modelandviews-model-value-is-not-displayed-in-jsp-via-el/

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