jsf - How to set a Map value in h:inputText -

i'm struggling implement trivial functionality jsf involves dynamically displaying content of nested map on page , editing capabilities values. has turned out mappedvalueexpression$entry when iterating on map c:foreach not writable!

<c:foreach items='#{inflectionbean.word.inflectionalforms}' var="number" >     <p:fieldset legend="#{number.key}">         <c:foreach items="#{number.value}" var="case" >             <p:panel header="#{case.key}">                 <h:inputtext value="#{case.value}" />             </p:panel>         </c:foreach>     </p:fieldset> </c:foreach> 

when trying submit above form i'm getting:

javax.el.propertynotwritableexception: /inflection.xhtml @39,56 value="#{case.value}": class 'com.sun.faces.facelets.tag.jstl.core.mappedvalueexpression$entry' not have writable property 'value'.

i wonder if there reasonable workarounds or if approaching problem in wrong way. thanks!

basically, code attempting invoking map.entry#setvalue(value). indeed not possible in el. instead, should referencing map value directly on map key, el can map#put(key, value).

<c:foreach items="#{number.value}" var="case">     ...     <h:inputtext value="#{number.value[case.key]}" />