probleme requete HQL netbeans

Bonsoir ,j'ai besoin de votre aide :?
j'utilise netbeans pour developper une application (jsf et hibernate)

je test une requete , ça passe pa

voici la rêquete :

Code:

from Equipement as equipement where equipement.EquLibelle='routeur' ;

l'erreur :

Code:

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org.hibernate.QueryException: could not resolve property: EquLibelle of: ondapack.Equipement [from  ondapack.Equipement as equipement where equipement.EquLibelle='routeur'  ; ]
	at org.hibernate.persister.entity.AbstractPropertyMapping.propertyException(AbstractPropertyMapping.java:44)
	at org.hibernate.persister.entity.AbstractPropertyMapping.toType(AbstractPropertyMapping.java:38)
	at org.hibernate.persister.entity.AbstractEntityPersister.toType(AbstractEntityPersister.java:1358)
	at org.hibernate.hql.classic.PathExpressionParser.getPropertyType(PathExpressionParser.java:269)
	at org.hibernate.hql.classic.PathExpressionParser.end(PathExpressionParser.java:312)
	at org.hibernate.hql.classic.WhereParser.doPathExpression(WhereParser.java:349)
	at org.hibernate.hql.classic.WhereParser.doToken(WhereParser.java:382)
	at org.hibernate.hql.classic.WhereParser.token(WhereParser.java:263)
	at org.hibernate.hql.classic.ClauseParser.token(ClauseParser.java:86)
	at org.hibernate.hql.classic.PreprocessingParser.token(PreprocessingParser.java:108)
	at org.hibernate.hql.classic.ParserHelper.parse(ParserHelper.java:28)
	at org.hibernate.hql.classic.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:216)
	at org.hibernate.hql.classic.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:185)
	at org.hibernate.engine.query.HQLQueryPlan.<init>(HQLQueryPlan.java:77)
	at org.hibernate.engine.query.HQLQueryPlan.<init>(HQLQueryPlan.java:56)
	at org.hibernate.engine.query.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:72)
	at org.hibernate.impl.AbstractSessionImpl.getHQLQueryPlan(AbstractSessionImpl.java:133)
	at org.hibernate.impl.AbstractSessionImpl.createQuery(AbstractSessionImpl.java:112)
	at org.hibernate.impl.SessionImpl.createQuery(SessionImpl.java:1623)

merci d'avance