Need to change the LOV field based on checked box selection in OAF page

Dear ALL,
I have a requirement as below:
I have a custom OAF page having a lov field which is mandatory, a check box and a two text fields.
So based on LOV value selection i am defaulting two text field value automatically.
So my requirement is when user selects the check box automatically the LOV field should be non mandatory and user can insert in values to the lov field and text field and submit it.
SO basically based on check box field selection i need to make the lov field in such a way it should accept all the values what user enters instead of check the query added in VO behind the LOV.
Please suggest me some pointers to achieve this requirement.
Thanks
Deb

hi,
in PFR use:
if ("checkevent".equals(pageContext.getParameter(EVENT_PARAM)))
                 HashMap hashMap = new HashMap();
                 String checkboxval=pageContext.getParameter("item2");
              hashMap.put("checkboxval",checkboxval);
                pageContext.setForwardURLToCurrentPage(hashMap ,
                true, // retain the AM
                OAWebBeanConstants.ADD_BREAD_CRUMB_NO,
                OAWebBeanConstants.IGNORE_MESSAGES);
and in PR use:
if((pageContext.getParameter("checkboxval'))!=null)
OAMessageLovInputBean lovInputBean=(OAMessageLovInputBean)webBean.findIndexedChildRecursive("item3");
      lovInputBean.setRequired("false");
try it
Regards
Mahesh

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