Lov selection disable button in oaf

Question

Dear ALL,
Based on LOV selection value i need to disable a submit button in OAF, please help me out.

Answer 1

Thanks jaya for reply, i tired below way
if (pageContext.isLovEvent())
              System.out.println("deb update bean testing1");  
               String lovInputSourceId = pageContext.getLovInputSourceId();
               if ("cculiststatus".equals(lovInputSourceId))
            String liststatus=(String)pageContext.getParameter("cculiststatus");
            OAMessageLovInputBean lovInputBean6=(OAMessageLovInputBean)webBean.findIndexedChildRecursive("cculiststatus");
                String chk1=(String)lovInputBean6.getValue(pageContext);
              System.out.println("deb update lov value selection"+liststatus);
                OAFormValueBean lovInputBean9=(OAFormValueBean)webBean.findIndexedChildRecursive("statuschkid");
                lovInputBean9.setValue(pageContext,liststatus);
                 String statuschk=(String)lovInputBean9.getValue(pageContext);
                 HashMap hm1 = new HashMap();       
                 hm1.put("statuschk",statuschk);
                 pageContext.setForwardURLToCurrentPage(hm1,false,"",OAException.ERROR);
in PR:
And another thing after refreshing page the lov value wht i chnaged it is not retaining
  String status=pageContext.getParameter("statuschk");  -------here i am getting value
      if(status.equals("INPROGRESS"))   ----------------This line is giving NULL pointer exception
      OASubmitButtonBean xxTrialSubmitButtonHandle = (OASubmitButtonBean)webBean.findChildRecursive("updateid");
      if(xxTrialSubmitButtonHandle!=null)
          xxTrialSubmitButtonHandle.setDisabled(true);
Please help me out