Erro ao gravar no Banco de Dados com Hibernate + Vraptor

ola pessoal estou com a seguinte exception

java.lang.ClassCastException: java.lang.String cannot be cast to java.lang.Integer br.com.caelum.vraptor.http.ognl.ListAccessor.setProperty(ListAccessor.java:67) ognl.OgnlRuntime.setProperty(OgnlRuntime.java:2225) ognl.ASTProperty.setValueBody(ASTProperty.java:127) ognl.SimpleNode.evaluateSetValueBody(SimpleNode.java:220) ognl.SimpleNode.setValue(SimpleNode.java:279) ognl.ASTChain.setValueBody(ASTChain.java:227) ognl.SimpleNode.evaluateSetValueBody(SimpleNode.java:220) ognl.SimpleNode.setValue(SimpleNode.java:279) ognl.Ognl.setValue(Ognl.java:737) ognl.Ognl.setValue(Ognl.java:783) br.com.caelum.vraptor.http.ognl.OgnlParametersProvider.setProperty(OgnlParametersProvider.java:157) br.com.caelum.vraptor.http.ognl.OgnlParametersProvider.createParameter(OgnlParametersProvider.java:144) br.com.caelum.vraptor.http.ognl.OgnlParametersProvider.getParametersFor(OgnlParametersProvider.java:96) br.com.caelum.vraptor.interceptor.ParametersInstantiatorInterceptor.getParametersFor(ParametersInstantiatorInterceptor.java:107) br.com.caelum.vraptor.interceptor.ParametersInstantiatorInterceptor.intercept(ParametersInstantiatorInterceptor.java:79) br.com.caelum.vraptor.core.LazyInterceptorHandler.execute(LazyInterceptorHandler.java:59) br.com.caelum.vraptor.core.DefaultInterceptorStack.next(DefaultInterceptorStack.java:54) br.com.caelum.vraptor.core.ToInstantiateInterceptorHandler.execute(ToInstantiateInterceptorHandler.java:56) br.com.caelum.vraptor.core.DefaultInterceptorStack.next(DefaultInterceptorStack.java:54) br.com.caelum.vraptor.util.hibernate.HibernateTransactionInterceptor.intercept(HibernateTransactionInterceptor.java:48) br.com.caelum.vraptor.core.ToInstantiateInterceptorHandler.execute(ToInstantiateInterceptorHandler.java:54) br.com.caelum.vraptor.core.DefaultInterceptorStack.next(DefaultInterceptorStack.java:54) br.com.caelum.vraptor.interceptor.FlashInterceptor.intercept(FlashInterceptor.java:83) br.com.caelum.vraptor.core.ToInstantiateInterceptorHandler.execute(ToInstantiateInterceptorHandler.java:54) br.com.caelum.vraptor.core.DefaultInterceptorStack.next(DefaultInterceptorStack.java:54) br.com.caelum.vraptor.core.ToInstantiateInterceptorHandler.execute(ToInstantiateInterceptorHandler.java:56) br.com.caelum.vraptor.core.DefaultInterceptorStack.next(DefaultInterceptorStack.java:54) br.com.caelum.vraptor.interceptor.InstantiateInterceptor.intercept(InstantiateInterceptor.java:48) br.com.caelum.vraptor.core.ToInstantiateInterceptorHandler.execute(ToInstantiateInterceptorHandler.java:54) br.com.caelum.vraptor.core.DefaultInterceptorStack.next(DefaultInterceptorStack.java:54) br.com.caelum.vraptor.interceptor.ExceptionHandlerInterceptor.intercept(ExceptionHandlerInterceptor.java:71) br.com.caelum.vraptor.core.ToInstantiateInterceptorHandler.execute(ToInstantiateInterceptorHandler.java:54) br.com.caelum.vraptor.core.DefaultInterceptorStack.next(DefaultInterceptorStack.java:54) br.com.caelum.vraptor.interceptor.ResourceLookupInterceptor.intercept(ResourceLookupInterceptor.java:69) br.com.caelum.vraptor.core.ToInstantiateInterceptorHandler.execute(ToInstantiateInterceptorHandler.java:54) br.com.caelum.vraptor.core.DefaultInterceptorStack.next(DefaultInterceptorStack.java:54) br.com.caelum.vraptor.core.EnhancedRequestExecution.execute(EnhancedRequestExecution.java:23) br.com.caelum.vraptor.VRaptor$1.insideRequest(VRaptor.java:92) br.com.caelum.vraptor.ioc.spring.SpringProvider.provideForRequest(SpringProvider.java:58) br.com.caelum.vraptor.VRaptor.doFilter(VRaptor.java:89) org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:393)

esse erro acontece quando vou salvar um objeto no banco com os dados do form jsp

Posta teu fonte ai pra gente dar uma olhada. Só com a exeption fica dificil, tem que analisar onde esse ClassCastException ta acontecendo! Mas antes dá uma olhada no teu mapeamento. Pode ser que no teu Pojo esse atributo seja uma String e tua base esteja esperando um int ou vice-versa, mas posta o codigo ai!