rem: birtSoapRequest.addOperation( Constants.documentId, Constants.Document, "GetCascadingParameter", null, object ); 
add:  var taskid = birtUtility.setTaskId( );  birtSoapRequest.addOperation( Constants.documentId, Constants.Document, "GetCascadingParameter", null, object, { name : this.__task_id, value : taskid } ); 
context: 	__beh_cascadingParameter : function( id, object )	{	    birtSoapRequest.addOperation( Constants.documentId, Constants.Document, "GetCascadingParameter", null, object );		birtSoapRequest.setURL( document.location );		birtEventDispatcher.setFocusId( null );	// Clear out current focusid.		return true;	},
meta: 855	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/855/f5d3573e55ae98083c793f6d1503a85bbee5507a/AbstractBaseReportDocument.js/buggy/viewer/org.eclipse.birt.report.viewer/birt/webcontent/birt/ajax/ui/report/AbstractBaseReportDocument.js