How to configure Scheduler task

Hello,

I'd like to configure Scheduler task with properties. I know that it is possible when service implements IService.

Interface com.sap.netweaver.rf.wrapper.IRFServiceWrapper extends IService and and class RFServiceWrapper implements that IRFServiceWrapper.

So I think I can configure portalapp.xml describing service RFServiceWrapper with properties. But I don't know how to pass fetched values of properties from that RFServiceWrapper to my scheduler task class, which implements ISchedulerTask (exteds java.lang.Object).

I appreciate any ideas.

Best regards,

Josef Motl