How to pass parameters to the URL in the OAF page

WHen you are calling the new custom page from the standard side menu navigation.The parameters can be passed by using the below code in process request of the controller.
  
  DictionaryData dictionarydata = new DictionaryData();
      dictionarydata.put("ImcPartyId", partyId);
      dictionarydata.put("ImcPartyName", partyName);
      pageContext.setFunctionParameterDataObject(dictionarydata);