How to modify a part of task parameters via worklist (not all paramenters)?

I am making a demo of showing the functions of human workflow / worklist using Oracle SOA Suite. The following process is not a real project. But I have some questions about how to modify parameters in worklist and jdeveloper. Please help me.
I create a BPEL with human workflow. It has 2 human tasks.
The first human task is a single approver type and the parameters contents can be modified via worklist. The user is oc4jadmin.
If oc4jadmin rejects it, the process will go to the second human task.
The second human task is a sequential lists of approvers type and the parameters contents can be modified via worklist. 3 users (the order is : jcooper -> jlondon-> tolstoy) can access it. The process is able to abrupt completion if anyone rejects it.
After the process is invoked in BPEL control,
1, oc4jadmin login worklist and modified the data, than reject it.
2, jcooper can login worklist and changed the data, save it, and approve.
3, jlondon login, view data, change data, and save it. However, if jlondon modified the
My questions are as follow:
1, If oc4jadmin rejects the task in worklist, how can I set the parameter cannot be modified and saved.
2, schema:
<schema attributeFormDefault="unqualified"
     elementFormDefault="qualified"
     targetNamespace="http://xmlns.oracle.com/BPEL_single_sequential"
     xmlns="http://www.w3.org/2001/XMLSchema"
xmlns:vv="http://xmlns.oracle.com/BPEL_single_sequential">
     <element name="BPEL_single_sequentialProcessRequest">
          <complexType>
               <sequence>
                    <element name="input" type="vv:complexType1" maxOccurs="unbounded"/>
               </sequence>
          </complexType>
     </element>
     <element name="BPEL_single_sequentialProcessResponse">
          <complexType>
               <sequence>
                    <element name="result" type="string"/>
               </sequence>
          </complexType>
     </element>
<complexType name="complexType1">
<sequence>
<element name="pid" type="string"/>
<element name="ptitle" type="string" maxOccurs="unbounded"/>
</sequence>
</complexType>
</schema>
In the worklist, the user can add another pid and leave the ptitle empty. In the schema, the ptitle (minOccurs=1) should appear at least once. How can I set that, if the user add another pid and must add at least one ptitle before saving it?
3, One element likes gender=male/female. In the worklist form, the default graphic component is an input field. How can I set the component to a dropdown list and it highlight value.
4, The default form is jsp file and it is beautiful. Could I make a jspx page and replace the jsp page? How to replace the jsp to jspx?
5, If I use sequencial approver type for the human task, how can I set various page layout? For example, user 1 can view and modified all parameters. User 2 can view some part of the parameters and changes it. User 3 can view all paramters but can just modified some of them?
Thanks a lot!
Edited by: [email protected] on 2009-3-10 上午12:39
Edited by: [email protected] on 2009-3-10 上午12:44
Edited by: YE

Hi,
all what you asked about can be done through java script.

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How to modify a part of task parameters via worklist (not all paramenters)?

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