Adding custom properties to a human task of a worklist

How can I add custom properties to a human task of a worklist. I don't know if it is possible. I tried to read the oracle BPEL Process Manager Workflow Services API Reference, but this is unreadable :-). Classes, Methods and Parameters are not commented...
Moreover where can I find a GOOD description of the Workflow Services API explaining the usage of the classes, methods and their associated parameters ?
Regards. Yvan

I means I would like to add some parameters to the task without having to load the payload. I would like for example to use these parameters to do query on worklist. Or may be there is also a mean to do search query on worklist using some values that are into the payload of the tasks. May be you can help me :-)
Regarding the documentation of the worklist API, it is for me very difficult to understant the role of the method as for example SystemMessageAttributesType.setTextAttribute1() or SystemMessageAttributesType.setNumberAttribute1() and so on, if there is no javadoc available and it is the same thing for all methods of the API :-).
Definitivly I would like to understand the Task entities and all available properties and action I can apply to it to know excatly what I can do with it. Where can I find this information ?
Regards. Yvan

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I did have a look at the link provided. I have followed the correct steps. I suggest having a look at the xsd I pass to the Human Task. In the xsd you will see the element entityValue which is of type anyType. In this element i map the payload of a bpel process e.g. if the payload has name, surname, address, telephone etc , that will be passed with the values in the entityValue element. Now when I map to the Human Task, I map the element EntityRequest to the Human Task payload. When I trigger the process that calls the Human Task, in the worklist application, I am able to see all other values in my schema below except entityValue. I have also provided a dummy entityValue mapping. I just want it to show whats stored in that element, the highlighted part
XSD schema thats I am using
<schema xmlns="http://www.w3.org/2001/XMLSchema" xmlns:xsd="http://www.w3.org/2001/XMLSchema"
targetNamespace="http://xmlns.up.ac.za/Integration/Generic/schemas/Exception"
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<complexType name="errorType">
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<entityValue xmlns:ns0="http://xmlns.up.ac.za/Integration/OIM/schemas/OimBioSyncEBM">
*<ns0:PersonStoreEBO>*
*<PsEbo:BioData>*
*<Bio:NAME_TITLE xmlns:Bio="http://xmlns.up.ac.za/Integration/OIM/schemas/Bio_DataEBO.V1">Dr</Bio:NAME_TITLE>*
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*<Bio:PREF_FIRST_NAME xmlns:Bio="http://xmlns.up.ac.za/Integration/OIM/schemas/Bio_DataEBO.V1">test</Bio:PREF_FIRST_NAME>*
*<Bio:FIRST_NAME xmlns:Bio="http://xmlns.up.ac.za/Integration/OIM/schemas/Bio_DataEBO.V1">test</Bio:FIRST_NAME>*
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*<Bio:COUNTRY xmlns:Bio="http://xmlns.up.ac.za/Integration/OIM/schemas/Bio_DataEBO.V1">ZAF</Bio:COUNTRY>*
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*<Bio:SEX xmlns:Bio="http://xmlns.up.ac.za/Integration/OIM/schemas/Bio_DataEBO.V1">M</Bio:SEX>*
*<Bio:RACE xmlns:Bio="http://xmlns.up.ac.za/Integration/OIM/schemas/Bio_DataEBO.V1">2</Bio:RACE>*
*<Bio:BIRTHDATE xmlns:Bio="http://xmlns.up.ac.za/Integration/OIM/schemas/Bio_DataEBO.V1">1912-12-12</Bio:BIRTHDATE>*
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*</ns0:PersonStoreEBO>*
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Edited by: K on Jun 1, 2012 9:59 AM

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Edited by: 855489 on May 2, 2011 4:23 PM
Edited by: 855489 on May 2, 2011 8:48 PM

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Learnt that I need to follow this link and no explicit setting is required in code.

Adding custom properties to a human task of a worklist

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