how can i add the variable's description?

[kentest]

the file task.jsp under the folder jbpm.war has a dataTable as follows:

 <h:dataTable value="#{taskBean.taskFormParameters}" var="formParameter">
 <h:column>
 <h:outputText value="#{formParameter.label}" />
 </h:column>
 <h:column>
 <h:outputText value="#{formParameter.description}" />
 </h:column>
 <h:column>
 <h:inputText value="#{formParameter.value}" readonly="#{formParameter.readOnly}" />
 </h:column>
 </h:dataTable>

Here I don't know where the names label and description come from?
I guess the variable formParameter.label may be corresponding to the attribute name of variable in the file processdefinition.xml.But I don't know the variable formParameter.description should be corresponding to what?

Can anybody help me please?I'm new in Jbpm.
Thank you in advance.

[kentest]

can anybody help me?

[pjmvn]

You will know how it work if you read JSF.
This is a JSF page, and "#{...}" to call a bean only.