to add fire action with param from controller:

Hashtable params = new Hashtable (1);
             params.put ("param1", pageName);
             Hashtable paramsWithBinds = new Hashtable(3);
           
             paramsWithBinds.put ("param2", new OADataBoundValueFireActionURL(bandamActualFlag, "{$PoHeaderId}"));
             paramsWithBinds.put ("param3", new OADataBoundValueFireActionURL(bandamActualFlag, "{$LINE_LOCATION_ID}"));
           
             paramsWithBinds.put ("param4", new OADataBoundValueFireActionURL(bandamActualFlag, "{$bandamActualFlag}"));
             FireAction fireAction = OAWebBeanUtils.getFireActionForSubmit (bandamMHDDate, "bandamMHDDateEvent", params, paramsWithBinds,false, false);
               bandamActualFlag.setFireActionForSubmit("bandamActualFlagEvent",params, paramsWithBinds,true,true);
               bandamMHDDate.setPrimaryClientAction(fireAction);