I am checking out seam and not understanding something very basic.
I have a simple state less session bean

@Stateless
@Name("tst")
public class TstBean implements Tst {

 @Logger private Log log;

 @In FacesMessages facesMessages;


 private String strTst;

 public void tst()
 {
 //implement your business logic here
 log.info("tst.tst() action called strTst = " + strTst);
 facesMessages.add("tst");
 }

 public String getStrTst() {
 return strTst;
 }

 public void setStrTst(String strTst) {
 this.strTst = strTst;
 }

}

and a simple view

<ui:define name="body">

 <h:messages globalOnly="true" styleClass="message"/>

 <rich:panel>
 <f:facet name="header">tst</f:facet>

 <h:form id="tstForm">
 <s:decorate id="valueDecoration" template="layout/edit.xhtml">
 <ui:define name="label">strTst</ui:define>
 <h:inputText id="value" required="true" value="#{tst.strTst}" />
 </s:decorate>
 <h:commandButton id="tst" value="tst!"
 action="#{tst.tst}"/>

 </h:form>

 </rich:panel>

</ui:define>

Whay am I getting this error when I click on the command button?:
/tst.xhtml @22,70 value="#{tst.strTst}": Bean: org.javassist.tmp.java.lang.Object_$$_javassist_88, property: strTst

from the exception
on: /tst.xhtml @22,70 value="#{tst.strTst}": Bean: org.javassist.tmp.java.lang.Object_$$_javassist_88, property: strTst

I am missing something basic; How is the form data bound to the component?